Se muestran los artículos pertenecientes al tema 7th GRADE SCIENCE..


                                                      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 ).

                                              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

    - 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


               * Activity 1.2  ( 20 points ):   Supporting structures.      ( 8/23/17   Wednesday )

   - ACTIVITY 1.2 : Forces are very important in every facets of our life. But today we’re going to analyze what they have to do with the structures that surround us.

     1.2.0    Review concepts from activity 1.1
                 At the following crossword look for five word-concepts we learnt at the last activity 1.1


                                                                      ( Force’s effects )

     1.2.a   To understand what we’re going to do today we watch a very nice video first :

                                      VIDEO FOR BUILGING  A STRUCTURE’S STABILIZER.

 - Supporting structures.      ( 8/24/17   Thursday )

      1.2.b   Build that triangle structure in order to support a pile of books.
                 Use the materials given by your teacher to build it.

       1.2.c   After building the structure you have made and checked, talk in pairs about the reason why it is necessary to have a bunch of these triangle strucutures in order to support an object.  What is happening with the forces around these triangles?.
                        Write your answer at your notebook and show it and give it to your teacher.

 - Make a report of what you have done in class about building your stiffen structure.


        1.2.d   What does it happen when forces are not nicely worked out?...check it!!

                                                        Tacoma bridge collapse video                                



                                                                LESSON 1


   - Pre-task (5 points) : 

  Level test to assign current course students level.


    - First of all, we should check what science is and what is used for, because we are studying forces and forces are just a part of the big branch of Physics (science).

  * Activiti 1.0 (5 points) :      WHAT SCIENCE IS.  ( 8/17/17 Thursday )

      1.0.a   Sit in groups of four and write in a sheet the answers you think are appropiate for the following questions :   (discussion in groups).

         - Copy the following questions in your notebook :
What science is? , what is it for? , How many parts does it have? , Which ones are we going to study? , do we use it in our daily life?...

                           Template to fill out :  WHAT SCIENCE IS.

       1.0.b  Watch this video and after check again the answers you gave to the previous questions and change the answers if needed.

                                  VIDEO 1

                                  VIDEO 2

          * Activiti 1.1 (10 points) :    Force’s effects.    ( 8/22/17  Tuesday )

1. In order to learn what a Force is and the effects Forces can produce we develope the ACTIVITY 1.1.
      1.1.a  In this activity you are going to follow your teacher instructions in order to manipulate the following materials : Two pieces of paper, a pen, marble, your own hands.
                 In pairs, with those objects, ask your partner what you must do to get the following effects :  

                       - Folding.
                       - Deformation, loss of shape.
                       - Breaking.
                       - Heating.
                       - Change of velocity, turn, spin, motion.

       1.1.b  Draw a chart at your notebook in which you write the effects a force can do.
                 Besides the effect write a little description of an example of you have done in order to get that effect.

                 Draw a chart like this :    CHART.

        1.1.c  We should try now to explain what a force is, what it is not an easy task.
                  Talk in a voice level 2 with your classmate about how to explain what a force is. Try to explain to each other without using the Word FORCE.

         1.1.d  Once you have talked for a while, and when your teacher tells you, watch the following video and after watching it, talk with your partner again trying to explain now with other words what you thing a force is.

                                         VIDEO 1.1.d  Forces and its effects.

                     After watching the video and talking with your classmate, write a proper definition at your notebook about what you think a force is. You can use an example (situation) in order to explain it.

           1.1.e    > Once you have written your own definition about what a force is, copy the following description of a force :


           A Force is :
                      a) A force is a push or pull upon an object resulting from the object’s interaction with another object.

   b) Whenever there is an interaction between two objects, there is a force upon each of the objects.

   c) When the interaction ceases, the two objects no longer experience the force. Forces only exist as a result of an interaction.

                                                                  What a force is...


                                         7th GRADE SCIENCE’S RULES :

     - In order to develop a proper environment for a good learning process in class and for the students to get most profit of contents the following statements must be followed by every student :

1. Show respect to yourself and others. Follow your teacher directions.
2. Raise your hand before speaking or leaving your seat.                       
3. Arrive on time, prepared and ready to learn.
4. Say please and thank you.
5. Don’t either eat or gum in class. Drink when allowed.  
6. Make Friends and be thoughtful.
7. Keep hands, feet, and objects to yourself.


                 > Notebook, pencil, eraser, scissors, glue.
                 > Your phone and headphones.
                 > Wish to learn.



                                                              HAVE FUN

             AND ENJOY THE SCIENCE!!