1
Published in 1997
This report illustrates why caves develop in limestone. Students will better understand the evolution of Karst topography. Included are templates for making a paper model, instructions for its assembly, and a discussion of development of Karst topography.
Grade Level   6 7 8 9 10 11 12
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2
Published in 2006
In this lesson, students explore human impact on water resources, investigate the quality of their commuity's water supply, and consider ways to clean up and avoid further pollution.
Grade Level   6 7 8
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3
There are three states of matter: gas, liquid, and solid. Water in our atmosphere exists in these three states constantly. As the temperature of water vapor (a gas) decreases, it will reach the point at which it turns into a liquid (called the dew point or the point at which dew forms). This change...
Grade Level   3 4 5 6 7 8 9 10 11 12
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4
There are two methods water moves from the ground to the atmosphere as part of the hydrologic cycle. Transpiration is basically evaporation of water from plant leaves. Studies have revealed that transpiration accounts for about 10% of the moisture in the atmosphere, with oceans, seas, and other...
Grade Level   5 6 7 8 9 10 11 12
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5
Water on earth is used over and over. The water cycle, the continuous movement of water from ocean to air and land then back to the ocean in a cyclic pattern, is a central concept in meteorology. In the water cycle, the sun heats the Earth's surface water, causing that surface water to evaporate...
Grade Level   K 1 2 3 4 5 6 7 8
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6
The ocean is the key element in Earth's hydrologic cycle (water cycle). Students will construct a simple model of the hydrologic cycle to help them visualize and understand the movement of liquid water and heat. The hydrologic cycle is the continual movement of water from one place to another and...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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7
In this activity, students will use California precipitation totals and evapotranspiration data to calculate and graph water deficits and surpluses. These spreadsheet models will help students understand droughts and the movement of water in the water cycle.
Grade Level   5 6 7 8
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8
Water is the most abundant and important substance on Earth. It is essential to life and is a major component of all living things. There are approximately 336,000,000,000,000,000,000 gallons of water on Earth, existing in three states: solid, liquid, and gas. The sources for this water storage are...
Grade Level   6 7 8 9 10 11 12
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9
In this Watershed Sleuth Challenge, you will learn more about your watershed - what it is, why its important, and what you can do to protect it, as you earn badges at each level of this three-part course.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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10
There is water all over Earth in different forms. By far, most of the planet's water is in the oceans, but it is in other places as well. Sometimes water is a liquid, sometimes it is a solid, and sometimes it is a gas. These changes in the states of matter are the result of the water either gaining...
Grade Level   5 6
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11
Water in its liquid state is visible, as ponds, streams, water in bottles, and wet surfaces. You can also see water in its solid form , ice and snow. Water as a gas in the air, also called water vapor, is invisible. The process of visible liquid water turning into invisible gaseous water is called...
Grade Level   5 6
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12
The students will set up three demonstrations to observe the properties of water. They will explore the boiling point of water, the freezing point of water, and the ability of water to store heat. These activities can be done individually or as a set. About 71% of the Earth's surface is covered with...
Grade Level   6 7 8 9 10 11 12
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13
What is sea ice? It is simply frozen ocean water. Why is sea ice important? While it occurs mainly in polar regions, sea ice influences our global climate. Changing amounts of sea ice can affect ocean circulations, weather patterns, and temperatures around the world. Sea ice insulates the relatively...
Grade Level   6 7 8 9 10
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