Unit 3/4 Energy, Force & MotionTest Review

Front

What is a conductor?

Back

A material that allows energy (like electricity or heat) to pass through it easily.

Front

What is an insulator?

Back

A material that does not allow energy (like electricity or heat) to pass through it easily.

Front

What is gravity?

Back

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

Front

What is friction?

Back

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

Front

Which material increases friction on a bicycle ramp?

Back

Rough paper increases friction.

Front

What is thermal energy?

Back

The energy that comes from the temperature of matter; it is the energy of moving particles.

Front

What happens when you rub your hands together?

Back

You create heat through friction, which is an example of thermal energy.

Front

What is the role of conductors in electrical circuits?

Back

Conductors allow electricity to flow through the circuit.

Front

What is the role of insulators in electrical circuits?

Back

Insulators prevent electricity from flowing, protecting us from electric shock.

Front

Can plastic be a conductor?

Back

No, plastic is an insulator and does not allow electricity to pass through.