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Estuaries — Where the Rivers Meet the Sea
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An estuary is a body of water partially enclosed by land that has a connection to a river or stream, and an opening to the ocean. They are places where freshwater coming from rivers and streams mixes with salty ocean…
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Recycled Water: The Hydrologic Cycle
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If we cannot see the water vapor, how do we know water vapor exists? In this Activity, you will examine the evidence regarding the presence of water vapor in the air and explore how water vapor plays a key role in the…
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Book Chapter |
Lightning is not only visually spectacular; it is also dangerous. Lightning is one of the leading causes of weather-related deaths and injuries in the United States each year, not to mention damage to property. Knowing…
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In this Activity, students write an original, creative story about the movement of a water molecule through the hydrologic cycle.
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Measurement scales are standard values that can be used to compare properties. In meteorology, several scales may be used for the same quantity, depending on the purpose. For example, in the United States, temperature…
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Have you ever looked up in the sky and seen a cloud in the shape of an animal? Regardless of the shape or size, certain conditions need to be present for a cloud to form. In this Activity, you will explore the…
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If you watch the local news, you have probably heard meteorologists talk about the humidity as well as the temperature. In this Activity, you will use the fact that the amount of water vapor at saturation depends on the…
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Book Chapter |
Snowflakes are made of ice. We think of ice as being frozen water. However, if you have ever seen a snowflake, chances are you have noticed that snowflakes do not look like most examples of frozen water we are used to…
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Have you ever heard the word “muggy” used to describe the weather? How about the phrase “hazy, hot, and humid”? These phrases are used to describe times when there is considerable moisture in the air. In this Activity,…
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The air inside a cloud can be very different from the air outside the cloud, not only because of the presence of cloud droplets and increased water vapor, but also in terms of density and temperature. In this Activity,…
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Meteorologists collect data from multiple weather stations and instruments on Earth’s surface. The weather maps seen online and on TV are analyzed pictures that are produced after the data analyses have been completed.…
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Even though we cannot see it, water vapor is almost always present in the air, regardless of the temperature. This means that water vapor can exist at any temperature. What about liquid water? Can water exist as a…
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Riding the Wave of a Hurricane
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Hurricanes are the most destructive storms on Earth. Hurricanes contain tremendous amounts of energy. When it appears that a hurricane is moving toward land, the National Weather Service (NWS) issues hurricane watches…
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Without looking out the window, do you know what the weather is like right now? By not paying more attention to the weather, we not only miss many of the interesting things that go on in the atmosphere; we also might…
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Book Chapter |
The atmosphere is made up of a variety of gases, but it is gases like water vapor and carbon dioxide, which make up a small fraction of the air, that have the biggest impact on us in terms of precipitation, pollutants,…
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