Pushes and Pulls 1
• Introduction

PUSHES and PULLS are FORCES.

Forces start objects moving and forces stop objects moving.

Pete and Tony are PULLING in opposite directions. When the PULLS are the same, Pete and Tony do not move because the forces are EQUAL and OPPOSITE.

In a tug of war, when the forces are not equal, one of the players will be pulled in the direction of the force and will be the winner.

We all feel as special 'pull', this force is called GRAVITY.

Gravity pulls objects towards the Earth.

• Question 1

Which THREE of these statements are true for PUSHES and PULLS?

They are examples of FORCES.

They start objects moving.

Gravity is a pushing force.

They stop objects moving.

Pulls always act in the same direction.

• Question 2

Chris likes playing tennis. He says: When I hit the ball, the force is...

a pull

a push

a smash

• Question 3

When Chris hits (pushes) the ball with his racket, what effect does this force have on the ball?

It makes the ball change direction.

It makes the ball stop.

It makes a hole in his racket.

• Question 4

Which THREE of these are examples of forces making objects change direction?

wind blowing branches

a cup sitting on a table

a cup falling off a table

books stacked on a book shelf

a kite falling to the ground

• Question 5

Ruth and Ali are baking. When they make their biscuit dough, they use pushes and pulls, forces, to mix the ingredients together.

They use a rolling pin to roll-out the dough. What effect do the pushes and pulls of the rolling pin have on the dough?

stop the dough moving

change the shape of the dough

cook the dough

• Question 6

Which THREE of these are examples of forces changing the shape of objects?

melting ice

falling leaves

modelling clay

squashing a ball

stretching chewing gum

• Question 7

Gravity pulls objects towards the ground. The air around PUSHES against the falling object.

We describe PUSHES and PULLS as...

equal forces

gravity

opposite forces

• Question 8

Pierre is flying his kite on a windy day. Oh no, he let go of the string!

The kite does not fall back to the ground, but flies away. Which of these explains the force which carries the kite away?

the PUSH of the wind

the PULL of gravity

the shape of the kite

• Question 9

Chris and Tony are investigating other pushes and pulls. They STRETCH the spring using a pulling force.

Which word is the opposite of stretch?

squash

compress

compose

• Question 10