An illustrated article helps learners understand the water cycle and the distribution of Earth's water.

In this experiment, students create a model of the water cycle and learn about its crucial role in moving water around the Earth.

Students carry out a number of activities that demonstrate the concepts of evaporation, condensation, precipitation, and soil moisture and runoff. Then students construct a terrarium as a way to observe the water cycle. Immediately...

You might know that we are able to get free energy from the Sun, the wind, and water, but we can also get free energy from Earth itself. This source of energy is called geothermal energy and it is all about taking advantage of the heat...

Find out how much of the water on Earth is actually usable by humans, and where the rest of it is located. Learn where our water comes from and why it never runs out. Click Home to access the site in Spanish.

Work samples, phenomena, assessment templates, and videos that directly address standard MS-ESS2-4: cycling of water through earth's systems.

The oceans are a precious natural resource, part of Earth's carbon cycle. But what happens if the oceans absorb too much carbon dioxide? Many scientists are concerned that the increased absorption of carbon dioxide is causing them to...

Thirty-three cloze reading passages on various scientific passages including the scientific method, the water cycle, earth science, atoms, elements, cell division, body systems, and more.