NGSS Forces

Elastic materials are

• those that deform when a force is applied.

• those that deform but return back to their original shape

• those that can be applied forces but go back to the beginning

• None is correct.

Friction is the force between two touching things.

• True.

• False.

Which of these is NOT a force?

• Friction

• Air resistance

• Water resistance

• Electrical resistance

In which direction does gravity act?

• Downwards

• Upwards

• In all directions

• Towards the centre of the Earth

What force does a parachute use to slow things down before hitting the ground?

• Friction

• Air resistance

• Water resistance

• Wind

What type of force is air resistance?

• Contact

• Non-contact

When two objects rub together, what force do they produce

• Gravity

• Air resistance

• Friction

• Water resistance

What force does an aeroplane have to try to overcome so it is not slowed down too much?

• Gravity

• Air resistance

• Water resistance

• Friction

Which of these uses friction?

• A parachute

• A ball falling through the sky

• Brakes on a bike

• A wind turbine

Who discovered Hooke's law?

• Robert Hooke

• Charlie

• Newton