Stretching a rubber band is an example of…
Pulling force
What kind of force is used to open a book?
Non-contact
Magnetic
Contact
Which materials can magnets attract?
Wood and plastic
Paper and glass
Steel and iron
Which of these is a non-contact force?
Throwing a ball
Pulling a suitcase
Raining falling from the sky
Can you see a force?
No, but you can see what it does
What is a contact force?
A force that works when things touch.
Which of these is a non-contact force?
Pushing a pram
Gravity
The more mass an object has, the less gravity it exerts.
True
False
When you drop a ball, which force pulls it down?
Gravity
Rubbing a balloon on your head creates...
electrostatic force.
What happens when two magnets with the same poles face each other?
They attract
They repel
They disappear
You float in space because…
There is no gravity or very little gravity.
What happens when two magnets with the same poles face each other?
Thet attract each other
They repel
Gravity pulls everything toward the Earth.
True
False
What happens when you press hard with a piece of chalk?
It breaks
What kind of force is used to push a chair?
Contact force
A magnet can attract wood.
False
True
What force keeps your feet on the ground?
Gravity
Magnetism
What can change when you apply force to an object?
Its shape, speed or direction
Magnets attract which materials?
Some metals, like iron, steel or nickel.
What are the two poles of a magnet?
North and South
Electrostatic force happens when…
Two things rub and create static electricity (electric charges exchange and there are more positive or negative charges in the objects).
When you pull something, you…
Move it closer.
You need to touch something to use a magnetic force.
True
False
Gravity pulls everything toward the Earth.
True
False
Does everything have gravitational force?
Yes, it does