Chapter 12 - Using Energy

physical_science

 

 

Unit F - Motion and Energy

  • Chapter 12 - Using Energy

How do we use energy?

Gathering Light

Curriculum Materials

Gathering Light

While refracting and reflecting telescopes use different means of collecting light, the same principle applies to both—the bigger the aperture, the more light collected.

See the Light

See the Light

Light always travels in straight lines—that is, unless it bends or bounces off an object's surface. Take an enlightening look at light with these three easy experiments.

Light Quest

Light Quest

Particles and waves, reflection and refraction—how enlightened are you about the subject of light? Find out with Light Quest!, a kid-friendly trivia game.

White Light and Colored Light

Curriculum Materials

White Light and Colored Light

When does mixing every color under the rainbow create pure white rather than a murky brown or black? When light, not paint, is the medium—and you're subtracting, not adding, color.

Amazing Albedo

Activity

Amazing Albedo

There's a good reason why your summer attire is lighter and brighter than your winter wardrobe. This easy experiment illustrates the power of albedo in black and white.

How the Sun Works

Activity

How the Sun Works

Talk about a long-term power source. For billions and billions of years, the Sun has been giving off energy that equals 4 x 1026 watts. What keeps the Sun burning so bright?