Se muestran los artículos pertenecientes a Septiembre de 2017.

## 7th GRADE SCIENCE : Article 11 : How strong our Earth planet is.

EARTH PLANET’S STRENGTH.

* 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.

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 ).

## 7th GRADE SCIENCE : Article 12 : Earth's inner forces shaping the crust.

* 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.

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 :

Questions to be answered after watching the videos :

Questions.     ( 5 points ).

## 7th GRADE SCIENCE : Article 13 : Tectonic plates on earth. Forces that generate tectonic plates' motion.

* 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 ).

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

## 7th GRADE SCIENCE : Article 14 : Escalar and vectorial magnitudes. Forces and directions.

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.

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 ).

( 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 :

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 ).

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 ARE MEASURED IN NEWTONS, THAT IS THE UNIT OF A FORCE, AND IT IS MEASURED WITH A DYNAMOMETER.

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

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

- 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 :

Crossword

Searchword

## 7th GRADE SCIENCE : Article 15 : Force's units and measuraments.

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 ).

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.

( 9/19/17   Tuesday )

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

( 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 )

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 :

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 ).

( 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 :

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

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 ).

- 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.

## 7th GRADE SCIENCE : Article 16 : Working out Net forces.

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 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.

## 7th GRADE SCIENCE : Article 17 : Newton's laws.

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 ).

* 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 )

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.