3.6B - Force and Motion - The Magic School Bus

DA says her book is about forces. What force is she talking about?

• What Jedi's use to destroy Darth Vader

• A push or a pull

• Intermolecular forces

• The strength to do something difficult

What is a force?

• a push or a pull

• a change in velocity

What slows down almost every motion on earth?

• Acceleration

• Balanced Forces

• Friction

• Gravity

The baseball field that they visit has no friction. What will happen when Ralphie steps onto the field?

• He will be glued in place

• He will walk like normal across the field

• He will slide around the field

Ralphie can skate around on the field because it does not have...

• rolling friction

• gravity

• sliding friction

What can they try to use to stop Ralphie since there is not friction?

• The force of another object pushing the other way.

• A net.

• Gravity

What type of force gets Dorothy Ann moving?

• A pull

• A push

Why did they both stop?

• They bumped into each other, causing their motion to stop

• Because of friction

What pushed Wanda back towards 2nd base? 

• The force of the wind blowing

• The force of her throwing the baseball forward

Why do we need friction?

• to slow things down

• to make things speed up

• to help us breathe