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What Is the Water Cycle?

Author(s): Nancy P. Moreno, PhD, Barbara Z. Tharp, MS, and Judith Dresden, MS.

What are the Three States of Water?

When starting a new activity, it is always a good idea to focus the attention your students. Begin this activity by engaging students in a discussion about the states of matter. Ask students, Where can you find water on Earth? Students may give examples such as lakes, rivers, oceans or groundwater. They should understand that water also exists in solid and vapor form. Solid water occurs in nature as snow or ice. In fact, snow or ice can appear in a lot of places that are not mountains, glaciers and icebergs. Water vapor, the gas phase of water, can be found in our atmosphere. Although water is abundant, freshwater is a limited resource. Ask students if they think water changes from one state or form to another.


Funded by the following grant(s)

National Institute of Environmental Health Sciences, NIH

National Institute of Environmental Health Sciences, NIH

The Environment as a Context for Opportunities in Schools
Grant Numbers: 5R25ES010698, R25ES06932


Houston Endowment Inc.

Houston Endowment Inc.

Foundations for the Future: Capitalizing on Technology to Promote Equity, Access and Quality in Elementary Science Education