Curated OER
The Moon's Density-What's Inside?
In this moon's density worksheet, students solve 4 problems about the Moon and a model planet. They find the Moon's density and they find its volume. They make a model of a planet's interior and use its mass and radius to find the...
University of California
University of California: Understanding Earthquakes
This website is a resource for learning about earthquakes. Java animation at this site helps you visually understand the causes of earthquakes.
Exploratorium
Exploratorium: Earthquake Faultline Earthquake Activities
This outstanding website provides an excellent variety of hands-on earthquake activities to help you understand what causes earthquakes.