I'm Falling Down and I Can't Get Up!

In this unit, you have learned a lot about gravity. Here are some questions to review what you have learned and help you see how gravity affects us in many ways.

What things do you do on the playground where gravity helps you move?

What things do you do on the playground where gravity slows you down?

Movers help people get their furniture from one house to another. How can they get heavy items into a truck? Click the hint button if you need help. Click the answer button to see if you are correct.

Which takes less work for a truck's engine.

• To go up a hill with an empty truck?
• To go up a hill with a truck full of furniture?

If you are on a trip, which of the two options below will it be easier for a truck with a big load to pass your family's car?

• A flat road
• Going up a hill

You are learning to ride a bike. Is it safer to learn on a:

• Small hill?
• Flat street?
• Large hill?

What other questions can you come up with about gravity and forces?