Forces and Motion

What is gravity?

• A type of friction

• The force that pulls objects towards each other

• A type of lever

• The force that pushes objects apart

Which of the following reduces friction (a force created by 2 surfaces rubbing against each other)?

• Sandpaper

• Oil

• Gravel

• Sand

Which of these is an example of a lever?

• String on a blind

• Toilet flush handle

• Cogs on a bike

• A flagpole

Which of these is an example of a pulley?

• A sliding door

• A staircase

• A flagpole

• A seesaw

Levers, pulleys and gears make jobs....

• harder

• easier

What is air resistance?

• A type of gravity

• A force that slows things down when they move through the air

• A force that makes things move faster

• A type of magnetic force

Which of the following is NOT a force?

• Gravity

• Friction

• Wood

• Air resistance

A lever, pulley or gear allows you to use a ________ force to have a big/greater effect.

• small

• large

What happens when there is no air resistance?

• Objects cannot move

• Objects move slower

• Objects fall at the same rate regardless of weight

• Objects float

Which of these is a use of gears in everyday life?

• To hold doors open

• To increase weight

• In bicycles to change speeds

• To reduce noise