Earth is a system of systems.

This activity will help students better understand and practice estimating percent cloud cover.

Review this page to learn about the background of volcanoes and their eruptions.

This investigation introduces students to the significant environmental changes occurring around the world. The investigation uses NASA satellite images of Brazil to illustrate deforestation as one type of environmental change.

Students model Earth's tectonic plate movement and explore the relationship between these movements and different types of volcanoes.