This site contains an interactive activity in which students can learn about the three states of matter. There is also a factsheet that lists numerous properties of liquids, solids, and gases. The factsheet also uses water as an example...

[Free Registration/Login Required] An informational text about the water cycle. A question sheet is available to help students build skills in reading comprehension.

This is a slideshow explaining the water cycle.

The expansion-compression-condensation cycle of a refrigerator is discussed and explained. Understandable language but no graphics.

The operation of conventional air conditioners are described. Their parts and the refrigerant/heat exchange cycle is discussed. The use of alternative geothermal systems are explained.

This lesson will introduce a phase change diagram, and show how a substance changes from one phase to another. It is 3 of 3 in the series titled "Phase Changes."

This lesson will introduce a phase change diagram, and show how a substance changes from one phase to another. It is 2 of 3 in the series titled "Phase Changes."

[Free Registration/Login Required] This flipchart explores weather related vocabulary, including the water cycle, precipitation, condensation, evaporation, storms, and weather instruments.

Describes the four main stages of the water cycle - evaporation, condensation, precipitation, and collection.

Provides a simple explanation of the water cycle by describing four main stages - evaporation, condensation, precipitation, and collection. Includes three project ideas and some interesting facts.

This simple overview provides definitions of key terms in the water cycle and a diagram showing the path water takes in this cycle.

[Free Registration/Login Required] Using this flipchart students study the phases of the water cycle and its importance to the earth. Assessment questions use Activotes.

The steps in the water cycle and the processes that occur are explained in this resource.

This site from the Internet Encyclopedia of Philosophy provides a brief biography of Anaximenes and summary of his thought.

In this activity, students will learn about the water cycle through a story, a song, and a game, and relate it to the weather that they observe.

Simple diagram and explanations of the water cycle and related terms.

[Free Registration/Login Required] This is a science flipchart that reviews the stages of the water cycle and also ways in which the water cycle affects weather such as hurricanes and tornadoes.

An illustrated diagram of the water cycle that students can use for study.