We push the ........................... to make the bike move.

• brakes

• pedals

• wheels

When you want to stop the bike, use the .......................

• brakes

• pedals

• wheels

We us a ............................... force to pick up a bag on the ground.

• pull

• push

We use a .......................... force to move the pedals of the bike.

• pull

• push

The bike has one front ......................... and another back one.

• wheel

• pedal

• bell

.......................... keeps people from flying up into space.

• Air resistance

• Gravity

• Friction

When you press on a ....................... with your fingers, it gets smaller.

• spring

• wood

• metal

........................ is a pull force.

• Tension

• Friction

• Air resistance

........................... travel into space.

• Pilots

• Astronauts

• Drivers

My grandparents have ten ............................ I'm one of them. '

• sons

• daughters

• grandchildren