Review Semester Exam 1

Front

What is the best material to use for insulating electrical wires?

Back

Plastic is the best material for insulating electrical wires.

Front

What types of energy are used to make a toy car move?

Back

Light, electrical, and mechanical energy are used to make a toy car move.

Front

What happens to light when it comes in contact with water?

Back

The light is reflected.

Front

What is the term for the bending of light as it passes through different materials?

Back

Refraction.

Front

What does Mary need to convert electrical energy to light energy?

Back

Mary needs a battery.

Front

What is the property of materials that allows them to conduct electricity?

Back

Conductivity.

Front

What is the difference between reflection and refraction?

Back

Reflection is when light bounces off a surface, while refraction is when light bends as it passes through a medium.

Front

What is an insulator?

Back

An insulator is a material that does not allow electricity to flow through it easily.

Front

What is mechanical energy?

Back

Mechanical energy is the energy associated with the motion and position of an object.

Front

What is the role of a switch in an electrical circuit?

Back

A switch controls the flow of electricity in a circuit.