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Updrafts in Action
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In this weather activity/demonstration, learners watch as a ping pong ball is suspended in a stream of air supplied by a hair dryer.

Can Crushers
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In this activity, learners conduct an experiment by heating an aluminum can filled with water to investigate air pressure.

Toast a Mole!
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In this quick activity, learners drink Avogadro's number worth of molecules - 6.02x10^23 molecules!

That Sinking Feeling
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In this quick activity, learners observe how salinity and temperature affect the density of water, to better understand the Great Ocean Conveyor.

Hot Stuff!: Carbon Dioxide Extinguishes a Flame
In this demonstration, learners observe vinegar and baking soda creating carbon dioxide (CO2) in a bottle. The gas is poured out of a bottle onto a candle flame, putting out the candle.

It's all Done with Mirrors
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This fun and simple hands-on astronomy activity illustrates the path of light as it reflects off of mirrors and how this is used in telescopes.

How Animals Stay Warm
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In this quick activity, learners explore how blubber protects animals from the cold by making a "blubber mitt." Using cooking shortening, two zip-top sandwich bags, and duct tape, learners simulate bl

Why do Raindrops Sometimes Land Gently and Sometimes Land with a Splat?
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In this activity, learners examine raindrop bottles (prepared ahead of time) to observe in slow motion the behavior of falling droplets and explore concepts such as drag and terminal velocity.
When is a Glass of Water Really Full?
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In this activity, learners see how many coins they can add to a full glass of water before the water overflows.

Scale Model of Sun and Earth
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In this activity, learners explore the relative size of the Sun and Earth as well as the distance between them.

Storm Water Runoff Pollution
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This activity (located on page 8 of the PDF) introduces learners to the concept of Non-point Source Pollution--what happens when rain washes garbage and other pollutants into rivers and lakes.

Nuclear Fusion
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This simple and engaging astronomy activity explains nuclear fusion and how radiation is generated by stars, using marshmallows as a model.

Make Your Own Deep-Sea Vent
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In this activity, learners make a model of the hot water of a deep sea vent in the cold water of the ocean to learn about one of the ocean's most amazing and bizarre underwater habitats.

Hot Stuff!: Creating and Testing for Carbon Dioxide
In this demonstration, learners observe vinegar and baking soda reacting to form carbon dioxide (CO2) gas.

Hot Stuff!: Testing Ice
In this demonstration, learners compare and contrast regular water ice to dry ice (frozen carbon dioxide). Both samples are placed in a solution of acid-base indicator.

Making a Simple Astrolabe
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In this activity, learners make an astrolabe, a device used for measuring altitude, including the height of objects in the sky.

Ready to Observe: Enhance Your Telescope Experience
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This fun hands-on astronomy activity uses a variety of simple props to help learners understand why they see what they see in a telescope.

Evolution as Reproduction with Variability
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In this online activity, learners discover how random variation influences biological evolution.

Heavy Air
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In this activity and/or demonstration, learners illustrate visually and physically that air has weight. Learners balance two equally-inflated balloons hanging from string on a yard stick.

How it is Currently Done
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In this quick activity, learners observe how wind creates ocean currents.