A force is a push or a pull. Forces can make objects move, change speed, change direction or change shape.

Air resistance is a type of frictional force that acts between the air and the surface of a moving object.

Friction is a type of force that acts between surfaces.

A fair test is where only one variable is changed, to see what effect that has on the results of the investigation.

A variable is something that can be changed, measured or kept the same in an investigation.

Working scientifically: Planning enquiries to answer questions - Air resistance

British English CC

Working scientifically: Recognising and controlling variables - Air resistance

Air resistance: plan

Science

Introduction to gravity

Pushes and pulls

Friction: plan

Friction: do and review

Air resistance: do and review

Water resistance: plan

Water resistance: do and review

How levers can help us

How pulleys can help us

How gears can help us

Simple machines

Design and development of machines

In this Forces and simple machines unit, pupils learn that air resistance, water resistance and friction push back against moving objects. In this Forces unit, pupils will build on this knowledge to accurately describe and explain the actions of forces in a range of situations.

In the Simple forces including magnets unit, pupils learnt to compare how things move on different surfaces. In this Forces including simple machines unit, pupils will build on this knowledge to identify the effects of air resistance, water resistance and friction, that act between moving surfaces

This unit covers the effects of gravity, air resistance, water resistance, and friction on objects. It explores how mechanisms like levers, pulleys, and gears magnify forces. Emphasis is on taking precise measurements, recording complex data, and presenting findings.

Forces including simple machines

Physical activity and equipment requiring safe use

Name for the force caused by air moving against the surface of an object.

Objects with greater air resistance will fall more {{}} than objects with less air resistance.

Which of these statements are true about how you should treat variables in a fair test investigation?

A racing car trying to cross the finish line first.

Match the word to the example.  Is air resistance helpful or unhelpful in these situations?

In which direction does air resistance act?

What is the type of force that acts between two surfaces trying to move across each other?

Name the force which pulls unsupported objects towards the centre of Earth.

Rubbing your hands together to warm them.

In which of these situations is friction useful?

Friction works in the {{}} direction to the movement.

Starter Quiz