Forces

Forces

Contact and non- contact forces

Forces can make things:

move
stop moving
go faster
go slower
change direction
change shape
break

by pushing or pulling.

​

PUSH, the force of moving an object away from you.
(lejos de ti)

​​throwing a ball

​​kicking a ball

Pushing a swing

​PULL, the force of bringing an object closer to you. /towards you.
(cerca de ti /hacia ti)

​​Pulling a rope

Brusing your hair

Opening a book

GRAVITY, pulls everything on or near the Earth towards its centre.
(en o cerca de la Tierra hacia su centro)
All objects have got gravity. Gravity is a pulling force that make things stay on the ground. The Moon orbit the Earth and the Earth orbit the Sun.

​​an apple falling down

​a waterfall

MAGTETISM, pulls or attracts some metals (steel, iron...)
(acero, hierro...)
Magnetism is a non-contact force that can move an object without touching it.
(sin)
Opposite poles of a magnet attract each other. North ((( -))) South
The same poles of a magnets repel each other. North )))) - (((( North
South )))) - (((( South

​Magnetite

Contact forces

Non-contact forces

Pull

Gravity

Push

Magnetism

Friction

Electrostatic

Chalk can break

Rubber bands can change shape and
returns to their original shape.

Cans and plastic bottles can change shape
permanently.

Bricks don´t
change shape
or break.

Multiple Choice

Rubber band

• it breaks

• it changes and returns to its original shape

• it changes shape permanently

• it doesn´t break or change shape

Multiple Choice

plastic bottle

• it breaks

• it changes and returns to its original shape

• it changes shape permanently

• it doesn´t break or change shape

Multiple Choice

stone column

• it breaks

• it changes and returns to its original shape

• it changes shape permanently

• it doesn´t break or change shape

Multiple Choice

non-contact force

• pull

• friction

• gravity

• push

Multiple Select

contact forces

• magnetism

• friction

• gravity

• electrostatic

Multiple Select

contact forces

• magnetism

• friction

• push

• electrostatic

Multiple Select

A force can

• move an object

• change direction of an object

• move faster an object

• eat chocolate

Multiple Choice

opposite poles of a magnet repel each other.

• true

• false

Multiple Choice

the same poles of a magnet repel each other.

• true

• false

Multiple Choice

opposite poles of a magnet attract each other.

• true

• false

Multiple Choice

A leave falling to the ground

• push

• pull

• gravity

• magnetism

Multiple Choice

a boy kicking a ball

• push

• pull

• gravity

• magnetism

Multiple Choice

A person squeezing a paper with his hands

• push

• pull

• gravity

• magnetism

Multiple Choice

Same poles of a magnet ( North- North or South-South)

• attract

• repel

Multiple Choice

a magnet sticked on the fridge door

• push

• pull

• gravity

• magnetism