forces

What is the force that causes objects to fall to Earth?

• Air resistance
• Gravity
• Water resistance
• Pressure

What is the name of the units that we measure force in?

• Einsteins 
• Newtons
• Kg
• Metres

In which direction does gravity act?

• Downwards
• Upwards
• In all directions
• Towards the centre of the Earth

When two objects rub together, what force do they produce

• Gravity
• Air resistance
• Friction
• Water resistance

Which of these uses friction?

• A parachute
• A ball falling through the sky
• Brakes on a bike
• A wind turbine

What do you call a push or pull on an object?

• Friction

• Force

• Gravity

• Balance

What can you do to prevent friction on a slide?

• wear slippery clothes

• make the slide slippery

• put something slippery between you and the slide

• all of the above

Which of the following is an example of a PULL?

• tug of war

• putting books in your desk

• pushing a wheelbarrow

• all of the above

without friction, an object in motion would never stop

• true

• false

material with _______________ surfaces have less friction

• smooth

• rough

• both