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In this environmental science activity (page 3 of the PDF), leaners will identify and explain the causes of erosion.

Learners compare the weight of equal volumes of wax, water, and clay. Learners discover that since the wax weighs less than an equal volume of water, it is less dense than water and will float.

Many people get water from a source deep underground, called groundwater.

In this activity about water solubility and density, learners use critical thinking skills to determine why water can dissolve some things and not others.

In this three-part activity, learners play a game and conduct two simple experiments to explore water and surface tension. Learners will have fun discovering how water "sticks" together.

This hands-on experiment will provide learners with an understanding of the issues that surround environmental cleanup.

Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.