1. Forces and
Movements
Contact forces
1. It’s something that can
movement or objects’ shape.
modify
2. Forces are invisible, but you can see
the consequences.
Magnetic forces
Gravity forces
A force to attract
A force to
change shapes
A force to attract
A force to throw far
A force to stop
A force to repel

2. Back
Contact forces
Magnetic forces
Gravity forces
Contact forces
- They require touch.
- They can be pull or push.
- They can move objects
change the shape of objects
Pushing to move a
car
Pulling to move a
cart
or break objects.
Pulling (squeezing) to change the
shape
Game
Exercise 1
Exercise 2

3. Back
Contact forces
Magnetic forces
Gravity forces
Magnetic forces
- They are non-contact forces.
- They can attract or repel objects made of metals.
- You need a natural magnet (magnetite)
or man-made magnet.
a
Click here:
MAGNETS
Repelling iron fillings
Attracting metal
pipes
Game
Exercise 1
Natural magnet
Man-made magnet

4. Back
Gravity forces
Contact forces
Magnetic forces
Gravity attracts
towards the Earth
- They are non-contact forces.
- Gravity attracts objects towards the centre of the Earth.
- Moon gravity
The Earth gravity
1. It has less gravity, because it has a smaller
mass than the Earth.
1. It has more gravity because
it is bigger.
2. You can jump higher or carry heavier
2. You can jump lower and
objects.
objects are heavier.
Jumping on the moon
surface
Exercise 1
Gravity forces
Jumping on the Earth
surface

6. VISITED WEB SITES:
http://sayitwithscience.tumblr.com/post/9799187135/check-out-a-previous-post-on-gravityhere-and
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http://www.funzug.com/index.php/unusual-things/pictures-in-no-gravity.html
http://www.quintic.com/education/case_studies/Gravity.html
http://www.teachersource.com/product/naturally-magnetic-lodestone-magnetite/earthscience-geology
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http://www.kabytes.com/negocios/los-lanzamientos-estan-sobrevalorados/
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A_LA_PELOTA.jpg
If you click on each picture, you will visit the
site where they were found.