Chapter 5 - The Earth-Moon System

earth_science

Unit C - Observing the Sky

Chapter 5 - The Earth-Moon System

Read interviews with astronomers, learn about the tools they use to explore our universe, experiment to discover whether or not the moon rotates on its axis. do an experiment that demonstrates how a nuclear force can fuse two protons that repel each other.

Fusion Simulation

Hands-on Activity

Fusion Simulation

Confused about fusion? You won't be once you've completed this experiment, which demonstrates how a strong nuclear force can fuse two protons that naturally repel each other.

Telescopes: Super Views from Space

Curriculum Materials

Telescopes: Super Views from Space

It probably comes as no surprise that telescopes do a better job of collecting light and observing outer space than your eyes. But do you know why? (Hint: the answer is NOT magnification!)

Building a Simple Refracting Telescope

Curriculum Materials

Building a Simple Refracting Telescope

What could Galileo see when he looked through his telescope? Build a refracting telescope with lenses similar to the ones he used, and see the answer for yourself.

Space Shuttle Orbiter

Curriculum Materials

Space Shuttle Orbiter

Did you know that satellites and the Space Shuttle don't need engines to power their orbits? See how Earth's gravitational pull bends their forward motion and keeps them moving around the planet.