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This is an activity (located on page 131 of the PDF) related to sleep and circadian rhythms as well as space travel.

free Ages 8 - 18 45 to 60 minutes
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In this activity, learners will use Google Sky to observe features of the night sky and share their observations.

free Ages 4 - 11 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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This simple, yet surprising physics demonstration challenges preconceptions about forces, and demonstrates the strength of atmospheric pressure.

free Ages 4 - adult Under 5 minutes
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Did you know that you would be a different age if you lived on Mars? It's true!

free Ages 8 - 18 10 to 30 minutes
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This is a quick activity (located on page 2 of the PDF under Nasturtium Leaves Activity) about surface tension.

free Ages 8 - 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 simple demonstration, learners investigate the properties of air pressure. Learners place an index card on top of a glass full of water, then invert the glass.

free Ages 8 - 14 5 to 10 minutes
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In this online Flash game, learners will captain a sailing challenge, adjusting boat direction and sails, seeking the way to take greatest advantage of varying wind speeds and directions to catch the

free Ages 6 - 14 5 to 10 minutes
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In this activity, learners measure and calculate the amount of cubic feet various containers contain. Next, learners investigate cubic feet per second (cps), by carrying jugs in one second.

free Ages 11 - 18 45 to 60 minutes
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In this seismic simulation, learners play a "who-dunnit" game to explore earthquakes.

free Ages 11 - adult 1 to 2 hours
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On an airplane trip, learners have an opportunity to investigate the properties of air pressure at different altitudes.

free Ages 6 - 14 30 to 45 minutes
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In this quick and easy activity and/or demonstration, learners use two empty 2-liter bottles and hot tap water to illustrate the effect of heat on pressure.

free Ages 6 - 18 5 to 10 minutes
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In this kinesthetic activity, learners will play a game with a ball to demonstrate the Coriolis force, which partly explains why hurricanes in the Northern Hemisphere rotate counterclockwise.

free Ages 8 - 14 10 to 30 minutes
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In this online activity, learners build their own system of heavenly bodies and watch the gravitational ballet.

free Ages 11 - adult 10 to 30 minutes
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In this on site "field trip" activity (located on pages 6-9 of PDF), learners get hands-on experience identifying building materials by playing "Building Bingo".

free Ages 8 - 14 1 to 2 hours
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In this activity, learners make their own "tornado" using two soda bottles and water.

free Ages 4 - 11 10 to 30 minutes
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In this activity, learners interpret three trackways and use measurements and a formula to infer the relative speed of dinosaurs.

free Ages 11 - 14 45 to 60 minutes
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In this activity (located on pages 9-14 of PDF), learners visit a cemetery to examine the distinguishing characteristics of rock weathering.

free Ages 8 - 14 1 to 7 days
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In this quick activity, learners use a toaster to investigate the source for the Earth's wind. Learners hold a pinwheel above a toaster to discover that rising heat causes wind.

free Ages 4 - 14 Under 5 minutes