Earth and Beyond
Energy in Action
Move It!
Natural Selection & Survival
Signals and Waves
100

The amount of daylight and darkness changes throughout the year because of this.

What is Earth's tilt?

100

Energy stored in food is an example of this type of energy.

What is chemical energy?

100

An object in motion stays in motion unless acted on by a force. This is an example of this law.

What is Newton’s 1st Law?

100

This process explains how helpful traits become more common over generations.

What is natural selection?

100

The rate at which a vibration occurs

What is frequency?

200

This force keeps the Moon in orbit around Earth.

What is gravity?

200

A stretched rubber band has this type of potential energy.

What is elastic potential energy?

200

The faster something moves, the more of this it has.

What is kinetic energy?

200

A bird’s sharp beak that helps it eat insects is an example of this.

What is an adaptation?

200

The height of a wave from the rest position to the crest.

What is amplitude?

300

The path a planet takes as it travels around the Sun.

What is an orbit?

300

When you rub your hands together and they get warm, this type of energy is produced.

What is thermal energy?

300

This is the force that pulls all objects toward Earth’s center.

What is gravity?

300

This is the source of variation in a population’s traits.

What are genetic mutations?

300

A loud sound has more of this than a quiet sound.

What is energy (or amplitude)?

400

When it’s summer in the northern hemisphere, it’s this season in the southern hemisphere.

What is winter?

400

This law says energy cannot be created or destroyed.

What is the law of conservation of energy?

400

A student pushes on a wall, but the wall doesn't move. This is an example of this type of force.

What is a balanced force?

400

A trait that increases an organism’s chance of surviving and reproducing.

What is a beneficial trait (or adaptation)?

400

Information can be sent using pulses of light in this type of wave.

What is an electromagnetic wave?

500

The length of Earth’s orbit around the Sun.

What is one year (or 365 days)?

500

The type of energy transformation that happens when a battery powers a flashlight.

What is chemical to light energy?

500

When two teams pull with equal force in tug-of-war, the rope doesn’t move. Why?

What is balanced forces?

500

Over many generations, helpful traits do this in a population.

What is become more common (or increase in frequency)?

500

This state of matter tranfers sound the best. 

What is a solid?