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In this activity, learners explore the different salinities of various sources of water by taste-testing.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners discover how to determine the distance to a lightning strike or nearby thunderstorm.

free Ages 6 - 14 5 to 10 minutes
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In this activity, learners will estimate the sizes of balls to learn how to estimate the size of hail. Learners will compare their estimates to the estimates of their peers and the real measurements.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners discover how the extent of various wind speeds changes in each of the four quadrants around a hurricane.

free Ages 11 - 18 10 to 30 minutes
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In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs.

1 cent - $1 per group Ages 8 - 18 30 to 45 minutes
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In this activity, learners explore how the area of Arctic sea ice has changed over recent years. First, learners graph the area of Arctic sea ice over time from 1979 to 2007.

free Ages 11 - 18 45 to 60 minutes
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In this activity, learners discover if carbon dioxide has an effect on temperature.

1 cent - $1 per group Ages 6 - 14 1 to 2 hours
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In this activity, learners use simple items to construct a device for indicating air pressure changes.

$1 - $5 per student Ages 8 - 18 1 to 4 weeks
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In this activity, learners will measure the length of a shadow and use the distance from the equator to calculate the circumference of the earth.

1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
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In this activity on page 27, learners perform an experiment to learn about how different types of marine debris degrade and how weather and sunlight affect the rate of degradation.

$1 - $5 per group Ages 8 - 14 1 to 12 months
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In this 6-7 day investigation, learners begin with an introduction to seamounts that are present in the Gulf of Alaska.

$5 - $10 per group Ages 11 - 14 1 to 7 days
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In this activity, learners graph 48 hourly air temperatures from a local weather observation site and observe the diurnal temperature variations.

free Ages 8 - 14 30 to 45 minutes
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In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.

$5 - $10 per group Ages 6 - 14 30 to 45 minutes
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In this weather forecasting activity, learners use common materials to construct a rain gauge and measure daily, monthly, and yearly rainfall.

1 cent - $1 per student Ages 6 - 14 30 to 45 minutes
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In this activity, learners observe the effect of transpiration as water is moved from the ground to the atmosphere.

1 cent - $1 per group Ages 6 - 14 2 to 4 hours
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In this activity, learners explore how light and dark colored objects absorb the Sun's radiations at different rates.

$1 - $5 per group Ages 6 - 14 2 to 4 hours
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In this activity, learners explore how the shapes, sizes, and distances of land masses appear differently on two different models of Earth: an icosahedron and a flat map.

1 cent - $1 per group Ages 11 - 18 30 to 45 minutes
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In this activity, learners use simple items to construct a device for indicating air pressure changes.

$1 - $5 per student Ages 8 - 18 1 to 4 weeks
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In this activity/demonstration, learners observe what happens when two ping pong balls are suspended in the air by a hair dryer. Use this activity to demonstrate how rain drops grow by coalescence.

free Ages 6 - 14 Under 5 minutes
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In this activity, learners are introduced to tree rings by examining a cross section of a tree, also known as a “tree cookie.” They discover how tree age can be determined by studying the rings and ho

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes