7th Grade Study Guide - Fall Semester Exam

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves that can travel through empty space and do not require a medium. They transmit energy instead of matter.

Front

What type of energy is present when a slingshot band is stretched backward?

Back

Potential energy is present when the slingshot band is stretched backward.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion, present when an object is moving, such as a rolling ball or a windmill turning.

Front

What happens to heat flow when iced tea cools down?

Back

Heat flows from the tea to the ice as the tea cools down.

Front

How is sound energy produced?

Back

Sound energy is produced when molecules vibrate, creating waves that can be detected by our ears.

Front

What is the relationship between sound energy and kinetic energy?

Back

Sound energy is a form of kinetic energy because it travels in waves and involves the movement of molecules.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state, such as a stretched slingshot or water behind a dam.

Front

Can electromagnetic waves travel through a vacuum?

Back

Yes, electromagnetic waves can travel through a vacuum, unlike mechanical waves that require a medium.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is an example of kinetic energy in everyday life?

Back

An example of kinetic energy is a moving car, a flowing river, or a person running.