21
Collision and coalescence is the process by which cloud droplets grow large enough to fall as rain in clouds. You will suspend two ping pong balls in the stream of air supplied by a hair dryer. The balls will bump into each other, creating a clicking sound signifying the collision.
Grade Level   6 7 8 9 10 11 12
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22
We feel the wind everyday. The air is almost always in motion. One day it may be from the north and the next day from the south. There are many sources for wind: mechanical sources such as fans and, in nature, falling rain as it drags air along. But what is the origin of wind on the earth? Using a...
Grade Level   9 10 11 12
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23
The constant pushing of molecules into each other if the reason we feel wind. As one molecule bumps into another, it transfers energy into the next molecule. This constant pushing on the oceans surface also transfers energy to the water. This energy transfer is responsible for the motion of the...
Grade Level   7 8 9 10 11 12
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24
Onjects float if they weigh less than the weight o the water they displace. Conversely, onjects will sink if they weigh more than the weight of the water they displace. Students will observe how the added sigar in a can of soda affecs its ability to float in water by the change of density.
Grade Level   6 7 8 9 10 11 12
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25
What does up, must come down. Precipitation is the most commonly seen aspect of the hydrologic cycle. Students will learn how the water cycle works using 3-D paper craft activity. The students will see a demonstration of the concept of precipitation.
Grade Level   3 4 5 6 7 8 9 10 11 12
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26
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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27
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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28
Barometers using mercury are heavy and fragile. The first working version of an aneroid (without water) barometer was built in 1843 by French scientist Lucien Vidie. This made the barometer very portable and it became a commonly used meteorological instrument. It was still calibrated to the...
Grade Level   9 10 11 12
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29
The amount of air over us is constantly changing. As a result, the weight of that air, called pressure, is constantly changing. These changes in air pressure are indications of changes in our weather. We measure this change using a device called a barometer (bar-meter or measurer).
Grade Level   9 10 11 12
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30
Pressure is not only a matter of altitude but also dependent upon the temperature. As the temperature increases so does the pressure. The molecules and atoms that comprise the air we breathe gain energy as they absorb heat. That increase in energy results in faster moving atoms which we observe as...
Grade Level   7 8 9 10 11 12
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31
Bernoulli's principle states that in fluid flow, an increase in velocity occurs simultaneously with decrease in pressure. The students will discover that the faster air moves (air acting as a fluid), the lower the pressure beccomes within that air flow. They will see this effect blowing between two...
Grade Level   7 8 9 10 11 12
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32
To show that air has weight, the air is removed from one of two balanced balloons throwing the balance off.
Grade Level   5 6 7 8 9 10 11 12
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33
Demonstrate that AM radio signals can travel many 1000's of miles at night. The student will listen to as many radio stations as possible obtaining the call signs and places of origin during the evening (after sunset) hours.
Grade Level   7 8 9 10 11 12
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34
NOAA's Channel Islands National Marine Sanctuary has educational resources for learning about the effects of increased acidity in the oceans. Watch video lectures on ocean acidification, or download hands-on activities to explore the topic. For example, the game Help Nemo Find His Home! (grades 4-8)...
Grade Level   4 5 6 7 8 9 10 11 12
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35
In this activity you will measure changing weather conditions prior to, during, and after a storm.
Grade Level   6 7 8 9 10 11 12
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36
WebWeather for Kids provides information on many different weather-related topics, such as clouds, thunderstorms, tornadoes, and more.
Grade Level   K 1 2 3 4 5 6 7 8
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37
The purpose of this experiment is to see condensation.
Grade Level   K 1 2 3 4 5 6 7 8
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38
The purpose of this experiment is to observe how a vortex forms.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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39
The purpose of this experiment is to observe a vortex.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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40
The purpose of this experiment is to observe how moisture, cooling temperature, and condensation nuclei play a role in cloud formation.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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