Forces

What is a force?

• A type of food.

• A push or pull on an object.

• A type of weather.

• A colour.

Friction is a force that _____________________ .

• makes things fly

• opposes the movement of one surface over another

• speeds things up

• makes things float

Which of the following is an example of a smooth surface?

• a piece of sandpaper

• a basketball court

• glass

• a brick wall

Friction can help us walk, run and stop. It ________________ the movement of our feet.

• speeds up

• makes noisy food

• slows down

• makes us jump

When you rub your hands together quickly, you can feel them getting warm. This is because friction produces ____________________ .

• cold air

• heat

• magic

• water

When you slide down a slide at the playground, what force is slowing you down as you go down the slide?

• Wind

• Gravity

• Friction

• Magnetism

Which of these surfaces is rough?

• A mirror

• A feather

• Sandpaper

• A plastic toy

Which of the following is not something that a force can do to an object?

• Make it change shape.

• Make it disappear.

• Make it move.

• Make it smaller.

Who developed the theory of gravity?

• Isaac Newton

• Albert Einstein

• Charles Darwin

• Galileo Galilei

What force pulls objects towards the Earth's centre?

• Gravity

• Friction

• Electricity

• Temperature