In this lab, students investigate whether the rate of water falling (rain) affects the amount of erosion (soil movement). This experiment could lead to further questions: how does grass or rocks effect soil erosion, does erosion lead to...

Abiotic components are the nonliving components of the biosphere. Chemical and geological factors, such as rocks and minerals, and physical factors, such as temperature and weather, are referred to as abiotic components.

The most recent ice age peaked between 24,000 and 21,000 years ago, when vast ice sheets covered North America and northern Europe, and mountain ranges like Africa's Mt. Kilimanjaro and South America's Andes were encased in glaciers. At...

This digital textbook covers core earth science concepts and includes interactive features, real-world examples, videos, and study guides.

This customizable digital textbook covers topics related to fourth-grade science. It is Next Generation Science Standards (NGSS) aligned.