This overview of liquids explores what a liquid is and how matter becomes changes into a liquid.

In a class demonstration, students observe a simple water cycle model to better understand its role in pollutant transport. This activity shows one way in which pollution is affected by the water cycle; it simulates a point source of...

This ZOOMSci video segment shows how to create self-contained environments and explore how plants grow under different conditions. [3:24]

Learn how states of matter can change as heat is added to a system.

[Free Registration/Login may be required to access all resource tools.] Discusses water and where it occurs on Earth, gives an overview of the water cycle, and explains how the ocean is an integral part of the water cycle and is...

This site provides a comprehensive introduction to the water cycle. High schoolers construct a model to simulate parts of the water cycle. Includes background information, links to standards, lesson plans, and assessment ideas.

Explains the three states of water, how the water cycle works, and the role of temperature. Includes a fun fact quiz.

Find out more about rainy days when you check out this resource, which features hands-on interactive activities, experiments, fun facts, and more.

[Free Registration/Login may be required to access all resource tools.] An introduction to the biogeochemical cycle, the water cycle. Recognize evaporation, sublimation, and condensation. Identify groundwater and runoff water supplies.

This site explores the importance of clouds and how clouds are formed. Content details common atmospheric cooling mechanisms and atmospheric stability.

This animation discusses water and the water cycle in a storybook format. Condensation, evaporation, and precipitation are all covered.

Learn about the water cycle from this "book" that includes bright pictures and descriptions. Learn about precipitation, condensation, and evaporation and see examples of each phenomenon.

See how the processes of condensation and evaporation occur.

Water is the source of life on earth. It exists in many forms and is constantly changing. The circulation and conservation of earth's water is called the hydrologic (or water) cycle. Find out how water evaporates, condensates,...

For this teacher directed inquiry indoor lab students collect snow in a cup. They will estimate how much water will be in the cup after the snow melts. Students will then make predictions about what will happen to the cup of water. After...

Five chemistry lessons about phase changes between the states of mattter complete with handouts and animations.

Learn about the four phases of the water cycle, the ways in which watersheds are crucial to healthy water, and the best ways to manage local watersheds with this interactive lesson.

In this activity, you will investigate some of the processes that make water move in and out of the atmosphere by making a miniature water cycle model inside a plastic bag.

In this lesson, students will explore how water is continually cycled among land, the oceans, and the atmosphere.

How do you show students that the water cycle is more than just the traditional model of the ocean, clouds, and mountains and actually a part of their daily lives? This video will show multiple models of different part of the water cycle...

Discover the ins and outs of the water cycle through this collection of experiments and activities.

Learn about the different stages of the Earth's water cycle, and about processes involving water, including runoff, infiltration, and the differences between hard and soft water.

This lesson will introduce the phase changes that occur at the boiling, freezing, and melting points. It is 2 of 4 in the series titled "Boiling, Freezing, Melting Point."

This lesson will introduce the phase changes that occur at the boiling, freezing, and melting points. It is 4 of 4 in the series titled "Boiling, Freezing, Melting Point."