* Activity 1.29   :   Reviewing balanced forces and Newton’s laws.          ( 10/16/17   Monday )

             1.29.a    Balanced force wordsearch.     ( 5 points ).

              1.29.b    Newton’s laws review.     ( 5 points ).

              1.29.c    Tug of war balanced force.    ( 5 points ).

* Activity 1.30   :   Halloween writing.                                                   ( 10/17/17   Tuesday )

               1.30.a   Halloween writing to spanish students (intercultural Exchange).   ( 10  points ).

* Activity 1.31   :   Working out forces.                                               ( 10/18/17   Wednesday )

               1.31.a   Look the following web up :    Work out the following forces.       ( 5 points ).
                             ( Check the example done ).

               1.31.b   Now work out the forces at the following data table.        ( 10  points ).

                                 Use your chromebook to creat a table in which you work out 
                                 the value of the forces, acceleratios or masses asked.

               1.31.c   A truck has a mass of 15,000 kg. The driving force created  by the engine
                            is 21,000 N. Calculate the acceleration caused by this force.   ( 5 points ).

               1.31.d    Do the exercises 1 and  2 from the following link.
                              ( You have the solutions there to check).

                                                                       Force car’s parts video.

* Activity 1.32   :   Gravity and weight.                                                    ( 10/19/17   Thursday )

* Activity 1.33   :   Gravity and weight test.                                                 ( 10/20/17   Friday )

                                                                    Newton’s laws quizzes.



* Activity 1.24   :   Reviewing Newton’s laws.                                                ( 10/9/17   Monday )

             1.24.a    Reviewing Newton’s laws TEST.           ( 10 points ).

              1.24.b    Newton’s first laws Word search.          ( 5 points ).

* Activity 1.25   :   Reviewing Newton’s laws vocabulary.                         ( 10/10/17   Tuesday )

              1.25.a    Reviewing Newton’s laws 2.                  ( 10 points ).

             1.25.b    Reviewing Newtons’s laws 3.                 ( 5 points ).

              1.25.c    Reviewing Newtons’s laws  vocabulary 4.   ( 5 points ).

* Activity 1.26   :   Third Newton’s law.                                                ( 10/11/17   Wednesday )

              1.26.a   Look the following webpage up and read about the  Third Newton’s law
                           When you finish Reading it, answer the questions below in a wordfile :  
                           ( 10 points ).

        * Questions and activities :

                 -  Who wrote the Third Newton’s law?.
                 -  What does the Third Newton’s law say?.
                 -  What does a rocket have to do with the third Newton’s law?.
                 -  When you push an object, it pushes back.  Is this right?  why?.
                 -  Remember the reaction force car we made in class a weeks ago.
                    Explain how the third Newton’s law is involved when the car works.
                    ( You can use or make a draw to explain it).
                 -  Look for an exemple and a picture in which you explain that the third
                    Newton’s law is involved. ( springboard jump ).
                 -  If you stay just in front of a Wall and you push it hard, what does it
                    happen?.   Explain it using the third Newton’s law.

                 -  Check the following web out and look at the swimmer’s picture.
                    Explain what is happening at the picture using the third Newton’s law.

                 -  Read the following webpage now and explain using your own words 
                    why is so important to consider the third Newton’s law in order to build
                    a rocket. Explain also how the rocket’s engine Works.

                1.26.b   Do the following activity and explain the aftermath after having read the links

                       - Look at this picture.  Explain what is going to happen and use the third
                       Newton’s law to explain it.                    ( 5 points ).

* Activity 1.27   :   Summarising Newton’s laws.                                     ( 10/12/17   Thursday )


             1.27.a    Check and read the three Newton’s laws at the following web.
                           Then write a nice outline or summary about them and send it to me by email.
                                                                                                                  ( 10  points ).

             1.27.b    Newton’s  laws drawing for using in the poster.     ( 10 points ).
                            Use the given drawings above to show the three Newton’s laws in your poster.
                            At the pink paper given make an outline up showing the 3 Newton’s laws 
                            using the drawings given.  You can see an EXAMPLE here about how to do it.


              1.27.c   Read the Newton’s biography and make a nice summary USING YOUR OWN
                                                                                                                  ( 10  points ).


                                              AT HOME YOU CAN READ MORE ABOUT NEWTON HERE !!.

* Activity 1.28   :   Balanced forces.                                                            ( 10/13/17   Friday )

                 1.28.a    Copy these paragraphes at the paper given to you today :

                             1.   " Balanced forces are a consequence of the third Newton’s law or also called
                                  action-reaction law of motion. This law is used to explain how forces act when
                                  an objecte is in balance or EQUILIBRIUM and then the object remains in its place
                                  due to the action of several forces acting upon it. Like a lamp hanging from the 
                                  roof or a piece of wood floating on the sea ".

                              2.   " When two or even more forces acting on an object are equal in size but act in
                                    opposite directions, we say that they are balanced forces.
                                    If the forces on an object are balanced ( or if there are no forces acting on it ) 
                                    this is what happens " .  :

                                                     * An object that is not moving stays still.

                                                     * An object that is moving continues to move at the same speed
                                                        in the same direction.

                                                                                     ( 5 points ). 


                 1.28.b    Balance force is a consequence of the third Newton’s law, the action-reaction
                               force. Look the following link up and copy the definition in the paper given to you:

                                                                     Balance force.      ( 5 points ).

                                                       Once you have finished it all you write your 10 points at your score.


                 1.28.c    Go to the following WEB and look it up. Next open a google doc file and
                               paste a picture about a lamp hanging from the roof , a piece of Wood
                               floating on the sea and a box placed on a table and below each pic explain
                               how each object does not move or is in equilibrium. Use vectors and forces
                               in order to explain how the balanced force act upon them.

                                                                                     ( 10 points ). 


                1.28.d     Look the following WEB up and explain in a piece of paper how the game
                               of tug of war can be a nice example about BALANCED FORCES.

                                                                                             ( 5 points ).


                                  NEWTON’S LAWS.


* Activity 1.21   :   How a plane flies and forces involved.                          ( 10/2/17   Monday )

              1.21.a    Plane reaction force reading and questions.    ( 10 points ).

               1.21.b    Reaction force engine.   ( 10 points ).

              1.21.c    Reaction force search word.     ( 10 points ).

* Activity 1.22   :  First contact to Newton’s laws.                                            ( 10/3/17   Tuesday )

- Take a tablet from the chart-trolley and go to the following link to do this task.

               1.22.a    First contact with Newton’s laws.         ( 10 points ).

                      - Once you have looked this link up, answer the following questions :

                                        - Who was Isaac Newton?.

                                        - When did he live? Which century?.  Where?.

                                        - What did he do?.

                                        - How many motion laws did he sketch out?.

                                        - What kind of scientist he was?.

                                        - What another issues about science did he do?.

                                            - What is the first Newton’s law?.

                                        - Tell a situation or example in which the first law is involved.

* Activity 1.23   :  Second Newton’s law (Motion).                                ( 10/4/17   Wednesday )

               1.23.a    Go to the following link and read about Second Newton’s law. After that
                             answer the following questions :                                ( 10 points ).

    a0)  Who wrote the second Newton's law?.

    a1)  What is the difference between the first and the second Newton’s law?.

    a2) Write and explain what the second Newton’s law says about forces and motion.

    b) What is the mathematical equation for the second Newton’s law?.

    c) Tell an example in which the second Newton’s law is involved.

    d) Look this example (car)  up, later do the following similar exercise at your workbook:

        Mike’s car, which weighs 2,000 kg, is out of gas. Mike is trying to push the car to a gas station, and he makes the car go 0.1 m/s/s. Using Newton’s Second Law, you can compute how much force Mike is applying to the car.  


               1.23.b   Go to the following LINK and summarize , using your own words, the most important that is said about the second Newton’s law.       ( 5 points ).

               1.23.c  At the following LINK you can make a test and check what you know about the second Newton’s law after having done these activities.  ( 5 points ).

* Activity    :  No school today.                                                           ( 10/5/17   Thursday )

                                                                     NO SCHOOL.

* Activity   :  No school today.                                                             ( 10/6/17   Friday )

                                                                           NO SCHOOL.



                                                                       NET FORCES.


* Activity 1.16   :  Reviewing Hooke´s Law graphs.                                      ( 9/25/17   Monday )

               1.16.a    Reviewing Hooke´s law and forces.     ( 10 points ).


* Activity 1.17   :  Net forces.                                                                             ( 9/26/17   Tuesday )

               1.17.a    Learning targets for today.  

               1.17.b    NET FORCES activity.    ( 10 points ).

                1.17.c     Word search reviewing.   ( 5 points ).

* Activity 1.18   :  Reaction Force.                                                            ( 9/27/17   Wednesday )

               1.18.a    Reaction force car (A).    
                               Reaction force car (B).

                              Reaction force car report.    ( 10 points ).

                1.18.b    Elastic force reaction car.  ( Optional, at home ).

* Activity 1.19   :  Net Force’s booklet.                                                         ( 9/28/17   Thursday )

               1.19.a    Net Force booklet.     ( 20 points ).

* Activity 1.20   :  Finishing net force´s booklet.                                               ( 9/29/17   Friday )

              ( 1.19.a )   Finishing task from yesterday ------  Net Force booklet. 


                                                      Forces and measuraments.

* Activity 1.13   :  Force’s units and measuraments.                      ( 9/18/17   Monday )

               1.13.a   Measuring forces with a dynamometer :     ( 10 points ).

         MALIEK’S WORK ( Click here and download a pdf with your work for today Monday ).

      You already know that forces are measured in NEWTONS. But today we are using the appropriate device to measure forces, like weight, using the DYNAMOMETER. It is like a spring with a scale given in newtons in which we can measure different objects’ weights. The more the object weights the more the spring inside stretches and more newtons are given onto the scale.

                                                         1.13.a.1  Data table for dynamometers. ( 10 points ).


                  Students use different kinds of dynamometers to weight several different amount of objects with different weights. They have dynamometers in grams, in newtons and in kilograms at their reach. Once they weight the same objects as much in grams as in newtons they take notes about them at the paper given. They get used to read the different scales dynamometers show.


                                                Dynamometer’s outline using rule, bag, etc.

                                                          Materials used in the experience.


                                                                                                                                ( 9/19/17   Tuesday )

* Activity 1.13.a.2  to  1.13.a.4   :  Dynamometer definition. Calculations.    ( 5 points ).

        MALIEK’S WORK  (  Click here and download a pdf with your work for today Tuesday ).

( Maliek, whatch the video in 1.13.a.3 and do the summarize or outline about it. Do nothing else ).

                                                       1.13.a.2   Dynamometer marble’s weight.   ( 5 points ).

                                                       1.13.a.3   DYNAMOMETER VIDEO.

                                                                                                                     ( 9/20/17   Wednesday )

           MALIEK’S WORK   (Click here and download a pdf with your work for today Wednesday ).

                       Please Maliek, read the pdf with the text about Hooke’s law and do a little summarize of it at your workbook. After that look up for information about who Robert Hooke was and did because he is the scientist who did the Hooke’s law in 1660.

   +  INFORMATION ABOUT HOOKE’S LAW AND DYNAMOMETERS :   Copy the following information about Hooke’s law  given in PICTURE 1 at your workbook :


                                                                            PICTURE 1

                                                                            PICTURE 2

                                                   1.13.a.4    WHAT A DYNAMOMETER IS.   ( 5 points ).

                                                      1.13.a.5    Dynamometer’s parts and quiz.  ( 5 points ). 

                                                                                                                     ( 9/21/17  Thursday )

 - 1.14  Could you explain maybe now the HOOKE’S LAW and what it is used for ?.     Prepare and make up a GRAPH-POSTER about it now !!  ( Follow the instructions given by your teacher ).         ( 20 points ).

( Maliek, today read and do the following as your classmates do too ) :

  1- This is what you will learn today ( Read it ) :   Today you will be able to ...  ( 5 points ).


  2 - Write today targets in this paper given to you :   Write your targets for today.  ( 5 points ).
    ( In a paper like this you have to write the targets given below at the point number 3 ).

  3- These are the main targets pursuited today :      MAIN TARGETS
     ( Write these targets in the table given in point number 2 ).

  4- Make up the following graph to differentiate the parts of it :    Graph to build.  ( 5 points ).
      ( In a big paper or construction paper make and copy this graph and name the parts of it ).

  5- With the given data from the table make up and build the suitable graph :     ( 5 points ).

                                                                                                      Table with data for building a graph.


                                                                                                                         ( 9/22/17  Friday )

         1.15    We work today in the computer room 217. 

                    Follow the instructions given by your teacher in order to do your work at the computer.      ( 20 points ).


                   * First of all copy the following learning targets at your workbook in order to understand what you are going to learn today in class :

                                              LEARNING TARGETS FOR TODAY’S LESSON.

                       * Consult the following links in order to answer the following QUESTIONS :

                                                                         LINK 1

                                                                              LINK 2

                                                                              LINK 3

                                                                          LINK 4  ( Nice Hooke’s law simulator, try it!! )

   ( At this simulator you can try with different values of the spring constant K in order to make the spring thicker or thinner and make it stronger or weaker and check how much it stretches when a force is applied ).

                                                                          LINK 5

                                                       VIDEO 1 ABOUT ROBERT HOOKE.

    - If you have enough more time do a powerpoint presentation telling about Hooke’s Law, what it is, what it represents, what it talks about springs, about the Hooke’s law graph, and talking something about who Robert Hooke was. A general presentation about the Hooke’s law issue.


                                      VECTORIAL AND ESCALAR MAGNITUDES.

* Activity 1.11  :  Vectorial and scalar magnitudes.                  ( 9/8/17   Friday )

1.11.a   Studying scalar and vectorial magnitudes  :     ( 10 points ).

        Magnitude is every property that can be messured, like speed, weight, acceleration, mass, density, electrical conductivity, velocity, force, capacity, volum, etc.

                             - Some magnitude only need a number or quantity to be defined like the capacity and volum a bottle has, like 30 oz, or 2 liters, etc.

                             - Another magnitudes, like forces, velocity, etc, need both a number and a direction or vector, because they need to be determined by a direction. We must indicate in which direction, using an arrow, it goes. For instance the velocity and acceleracion a car is having need a vector, but the speed does not because speed is only a number.


                                                                   Vectorial magnitude example.

1.11.b    Speed and velocity     ( 5 points ) :                                                  ( 9/11/17   Monday )

                 1.11.b.1  Reviewing test about vectorial and scalar magnitudes.  ( 5 points ).

                                 Vectorial and scalar magnitudes’ outline picture on the whiteboard.

                                                                             1.11.b.1 FILE


                                                                                                                                         ( 9/12/17   Tuesday )

                 1.11.b.2   Finishing drawings from yesterday.  Test-learning activity with the whole group about forces and vectors.    ( 5 points ).

                                                                             1.11.b.1 FILE

                                                                                 1.11.b.2 FILE

                                                                                                               ( 9/13/17   Wednesday )

     1.11.b.3Difference between speed ( scalar magnitude ) and velocity , force ( vectorial magnitudes ).

                         Copy the following outline in your workbook in order to check the difference between the scalar variable of speed and the vectorial one of velocity :

                                Outline picture from whiteboard about speed and velocity.

                   1.11.b.3.1  Reviewing activity 1 about drawing vectors and forces.  ( 5 points ).
                                    Reviewing activity 2 about drawing vectors and forces.  ( 5 points ).

          Speed has no direction while velocity does. For example, if I say that I’m running at 10 mph, I have given you my speed. If I say that I’m running 10 mph north, then I have given you my velocity.

           The short answer is that velocity is the speed with a direction, while speed does not have a direction. Speed is a scalar quantity -- it is the magnitude of the velocity. Speed is measured in units of distance divided by time, e.g. miles per hour, feet per second, meters per second, etc.

                                                                                                                             ( 9/14/17   Thursday )

                   1.11.b.3.2   Make the following drawings at your workbook and indicate the forces the cars are doing, their vectors, directions, speed and velocities’ vectors : ( 10 points ).  

TRUE OR FALSE ABOUT FORCES AND SPEED ? :  ( 5 points each ).

                                               Speed and velocity questions to answer (true or false).

                                                                        Speed and velocity 1

                                                                        Speed and velocity 2

                                                            Pointing out the parts of a force activity.

 1.11.c    Forces, vectorial magnitude. Parts of a force   ( 10 points ).              

          1.11.c.1  Therefore we can say that velocity is a vectorial magnitude and speed is a scalar magnitude. The same about forces, when a force is indicated a vector (arrow) is needed as well as the number or value, so a force is a vectorial magnitude.

    ( 5 points )

                                                                       FORCES (Magnitude).

                                                                        APPLICATION POINT



                               A dynamometer or "dyno" for short, is a device for measuring forces.

         1.11.c.2    - Parts of a force :  ( 5 points ).

                                                                              Force’s parts 1.

                                                                              Force’s parts 2.

                                                                         Magnitude and direction.

    - Exercises about vectors, forces and force’s vector parts :


                                                                                                                                ( 9/15/17   Friday )

     - 1.12    Friday activities about forces and its effects   ( 20 points ). 

                                a.  Friday activities ( YOU CAN CHOOSE AMONG THESE POSSIBILITIES ).

                                                                National geographic magazines.

                                b. You can also choose to do these cross and searchwords :



* Activity 1.10   :  Showing Tectonic plates.                      ( 9/7/17   Thursday )

               1.10.a   Reviewing activity  about tectonic plates :     ( 10 points ).

                                      Cut out the earth’s main layers and paste them properly at the outline given.

                                                                               File 1

                                                                                     File 2

                                                              Your work should look like THIS .

               1.10.b    Searchword tectonic plate’s activity.        ( 5 points ).

                                                                 Searchword tectonic plates.

                1.10.c    Matching activity about tectonic plates.   ( 5 points ).


                                                              Match each concept with the right definition.


* Activity 1.9   :  Forces giving shape to the crust.                      ( 9/6/17   Wednesday )

             1.9.a   Short videos about forces that act within the shell of our planet.

                                                                        VIDEO 1

              1.9.b     Test reading activity to learn about the forces acting inside our planet and how they
                           change its shape throughout thousands of years :

                                            Reading activity with questions. ( 5 points ).

                1.9.c     Watch these videos and after answer the questions :                

                                                                        VIDEO 2
                                                                        VIDEO 3

                                                                      Earth’s layers.

                                                                     Earth’s layers 2.

                     Questions to be answered after watching the videos :

                                                                        Questions.     ( 5 points ).



            * Activity 1.8   :  Forces within our planet.                      ( 9/5/17   Tuesday )

             1.8.a     Students read the whole text in class taking turns and discussing different issues.

                           Review electromagnet reading activity with questions.  5 points ).
                           (Answer the questions about the reading ).

             1.8.b   Short video about forces that act within the shell of our planet.

                         ( Introduction to the lesson for tomorrow and making a connection between
                         electromagnet’s forces and the "electromagnet" that the melt iron earth’s inner core is 
                         and the forces it creates and act over the crust and to the different layers of the 
                         mantle ).

                                                                             VIDEO 1




            * Activity 1.7   :  Electromagnet.      ( 9/1/17   Friday )

             1.7.a     TEST  ( 8 points ) about electrical and magnetic forces and about electromagnets.

             1.7.b   Crossword review activity :

                                            CROSSWORD   ( Showing an electromagnet ). ( 5 points ).

                         (Materials are given to you, groups of 4 people).  (  10 points ).



                            SHOWING , DISPLAYING AN ELECTROMAGNET.

  - Our task for today is to make a presentation or a poster in order to show others what we have learned about electromagnets and magnetic forces.

* Activity 1.6  ( 23 points ) :   Showing an electromagnet.    ( 8/31/17 Thursday )

        1.6.a   Review crossword electromagnet working.  ( 5 points ).

        1.6.b   At the following activity you work in groups of 4 or 5 people in order to create a poster on a construction paper showing the different parts an electromagnet has and what they are used for.
                    Use the drawings given to form this work.      ( 10 points ).

                                                                    Drawings given for the poster




                                                     EXPLAINING HOW THE ELECTROMAGNET WORKS.

        When using an electromagnet we have two kind of forces involved, electric forces and magnetic forces. The running electrical current throughout the cable and wrapped around the nail creates a magnetic field that generates magnetic forces.  This forces atract finally the metallic clips.

* Activity 1.5  ( 15 points ) :   Explaining an electromagnet.    ( 8/30/17 Wednesday )

        1.5.a   Review crossword exercise    ( electromagnet’s parts ).  ( 5 points ).

        1.5.b   The following activity allows you to understand how an electromagnet works.
                   Try ordering the paragraphs so that the electromagnet’s mechanism can be understood.

                                                                    Video :  How an electromagnet works.

                                                                               ORDERING PARAGRAPHS      ( 10 points ).

           1.5.c   At the back of the paper given in the last activity, place the electromagnet’s parts at the appropriate location.



                                                        MAKING AN ELECTROMAGNET.

     * Activity 1.4  ( 35 points )  :  Electromagnet.      ( 8/29/17   Tuesday )

             1.4.a   Crossword review activity :

                                            CROSSWORD   ( Contact and non-contact forces ) ( 5 points ).

           Let’s see the video to make an easy electromagnet.             VIDEO.  ( 2:09 - 3:09 min ).

              1.4.b   NOW , DO IT !!!     (Materials are given to you, groups of 3 people).  ( 20 points ).
                                                      ( You need a battery, wire, tape, clips and a nail ).

             1.4.c  Make a report about the steps followed to make the electromagnet and give it to your teacher. Use the template your teacher gives you in order to full all the important sections

                                                             REPORT  TEMPLATE ( 10 points ).

                                      ( In case that you have more time for working at this class, it would be nice if you could draw an electromagnet outline showing the main parts of it ).


                           WHAT KIND OF FORCES IS POSSIBLE TO HAVE?

    * Activity 1.3 (5 points) :   Sort of forces.      ( 8/25/17 Friday )


         1.3.a   Review crossword exercise.   (stiffing structures ).
                   Students must finish their report from the class of yesterday (stiffing structures ).

                     Show video about Tacoma bridge collapse.


        1.3.b   Paying attention to the activities societies achieve for living, we can deduce the different kind of forces we can have. ( Electrical force, magnetic force, tension force, friction force,  nuclear force, contact forces, non contact forces or action at a distance forces, gravitational forces, centripetal force, centrifugal force, etc ) , but in physics we have the following classification.
                  Observe the drawings at the sheet you are given and try to match each one with the appropiate kind of force using arrows :

                                                                       KIND OF FORCES

      ( 8/28/17 Monday )

              Activity 1.3.b.2         -  Review of the kind of forces we studied on last Friday :        CROSSWORD 1.  ( 5 points ).

                                                - We must now organize and distribute the forces we know in two main groups :

                                               CONTACT AND NON CONTACT FORCES VIDEO 1.

                                                              NON CONTACT FORCES VIDEO 2.


        1.3.c  Make a table and classify the kind of forces you know in two groups, "contact forces" and " action at a distance forces or non contact forces" :

     ( electrical force, applied force, normal force, frictional force, magnetic force, nuclear force, spring force, gravitational force, air resistance force, tension force ).

                                                                  TABLE  ( 5 points ).

           1.3.d  Make groups of four people and with the objects given, try to creat some of the different kind of forces you have learnt.

                ( string , marble, elastic band, battery, paper, rug, plastic tube, nail, wire, tape, balloon, paperclip, magnets,   ... some other objects you can have around you...).   (10 points ).

         1.3.d   8th Period, poster about kind of forces, pictures and drawings. (10 points).
                    In groups of 4 students, organise and create a poster to be hanged on the 
                    wall outside science classroom about the main kind of forces we have
                    studied in class.   ( 15 points ).


                                                         8th Period drawing posters ( KIND OF FORCES ).




                                    TOTAL SOLAR ACLIPSE ON AUGUST 21th.      ( 8/18/17  Friday )

   1- Are you ready for the total solar eclipse on 21th August next week?. Check on the following video what a total solar eclipse is and how you may watch it without damage your ayes and why it is going to be well visible in Kentucky.

                                                              TOTAL SOLAR ECLIPSE VIDEO

    2- Read the information given by your teacher about the total solar eclipse and answer the questions at the paper’s bottom.

                                                            TEXT TO READ :  SOLAR ECLIPSE


   3-  Will you go out to see the eclipse next Monday?, you will enjoy if you do.

                                                      VIDEO HOW TO DO A PINHOLE CAMERA.

        Try now to explain with your own words what a total solar eclipse consists of. Write you explanation at the paper’s back from the activity 2. 

    4-  Explain the way you are going to see the eclipse for you know you cannot see it looking directly at the sun unless you want to damage seriously your eyes. Which method are you going to use to see the eclipse?  glasses?  pinhole?.

                                        HOMEWORK FOR WEEKEND 8/19/17 - 8/21/17

    - As a homework about the solar eclipse to can do these two works :

 1) Look for  the meaning of the following vocabulary (PDF file attached) on internet :

                                                                   Vocabulary (PDF).

  2a) Search in internet how many total solar eclipse there have been since the year 1900 to  on 21 August 2017.

  2b)  How many of them have been able to be seen in USA (Kentucky)?.


      - At the following link you can find how many solar eclipses ( counting partial and total solar eclipses in total, about 92 since 1900 ) there have been since 1900 to 2017 :

                                                   Number of solar eclipses since 1900

   - Addicional interesting and nice information about the solar eclipse :

                                                       SOLAR ECLIPSE WEBPAGE