Understanding Roller Coasters

What is the main idea of the first paragraph?

• How to enjoy a roller coaster ride

• How to stay safe on a roller coaster

• The process of starting a roller coaster ride

• Different types of roller coaster rides

What happens after the roller coaster goes up a steep hill?

• It stops at the top

• Gravity pulls it down

• It goes in reverse

• It stays in place

How do you feel when the roller coaster moves fast down the hill?

• Heavy

• Tired

• Dizzy

• Light

What is a “loop the loop”?

• A big hill

• A fast turn

• A big circle

• A roller coaster stop

What force keeps you in your seat during the loop?

• Gravity

• Friction

• Centripetal force

• Inertia

Why don’t you fall out of your seat at the top of the loop?

• The safety bar locks you in

• The speed and centripetal force keep you in place

• Gravity pulls you into your seat

• Friction holds you in place

What does the roller coaster use to stop?

• Centripetal force

• Gravity

• Friction

• Inertia

What is **inertia**?

• A force that keeps you in motion

• A force that makes you heavy

• A force that keeps you on the ground

• A force that slows you down

Why do some people feel dizzy or sick on roller coasters?

• Because of fast speeds

• Because of the changing forces

• Because of high altitudes

• Because of cold temperatures

What force do you feel when you jump with your bike and come down?

• Centripetal force

• Friction

• Inertia

• Gravity