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100

The Law of Universal Gravitation states that objects that are closer/farther will have a more powerful attraction to each other.

Closer

100

Substances that reduce friction are called ________. 

lubricants 

100

What force keeps the moon in place? 

Gravity 

200

The Latin word fluo, meaning flow, is where we get the word _______. 

Fluid 

200

When something sticks to something else, like tape to the wall, that is called ________. 

adhesion

200

What force helps a gecko climb?

Traction 

300

The mass of an object pulling other objects toward it is known as _______. 

Gravity

300

When something sticks to itself, it's called __________.

cohesion 

300

What force does bicycle breaks rely on?

Friction

400

_____________ objects are shaped in ways to help them travel through air better. 

Aerodynamic 

400

_________ is the friction between two objects that keeps them from sliding across each other.

Traction 

400

The force that is causing objects to move in a circular path instead of a straight line is called _________ _______. 

centripetal force 

500

Friction caused by moving through air or water is also called _______. 

Drag

500

________ is a force that holds back the movement of an object. 

Friction 

500

__________ _________ is the maximum speed you reach when you fall. 

Terminal velocity