Chapter 2: Forces and Motion Review

Front

Shade cast by an object in the path of light is called a _____________.

Back

shadow

Front

How do electric and magnetic forces act on different objects?

Back

They either push or pull objects.

Front

The form in which light energy travels is called ___________.

Back

waves

Front

What was the name of the fruit that fell on Isaac Newton's head when he suddenly realized his brilliant idea?

Back

apple

Front

What always happens when the forces acting on an object are equal in strength and opposite in direction?

Back

The motion of the object does not change.

Front

What is a force?

Back

A push or pull on an object.

Front

What is motion?

Back

The change in position of an object over time.

Front

What is gravity?

Back

A force that pulls objects toward each other, like the Earth pulling us down.

Front

What is friction?

Back

A force that opposes motion between two surfaces that are in contact.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.