Search Results

In this activity, learners use multiple thermometers, placed at different angles, and a lamp to investigate why some places on Earth's surface are much hotter than others.

Millions of organisms can live in and around a body of water.

In this outdoor, beach activity, learners use tennis balls, water balloons and other simple devices to investigate the movement of waves and currents off a sandy beach.

How do scientists measure how clear or murky water in a lake is? How does water clarity (clearness) affect what lives in the lake?