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Estuaries
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An estuary is a body of water that is created when freshwater from rivers and streams flows into the saltwater of an ocean.

West Coast Shipwrecks
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In this data activity, learners will explore shipwrecks from four National Marine Sanctuaries on the West Coast of the United States.

Fast Rusting
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In this activity, learners conduct an experiment to find out if steel wool will weigh more or less when it is burned. Learners will explore the effects of oxidation and rusting on the steel wool.

Indicating Electrolysis
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In this activity, learners build a simple electrolysis device. Then learners use an indicating solution to visualize hydrogen and oxygen molecules in water.

Mold Mole Molds
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In this activity, learners make different shapes that hold exactly one mole of gas (air).

Freezing Lakes
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In some parts of the world, lakes freeze during winter. In this activity learners will explore water’s unique properties of freezing and melting, and how these relate to density and temperature.

Detect Solar Storms
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In this activity, learners build their own magnetometer using an empty soda bottle, magnets, laser pointer, and household objects.

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.

Regolith Formation
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In this three-part activity, learners use food to determine the effects of wind, sandblasting and water on regolith (dust) formation and deposition on Earth.

The Ins and Outs of Tides: Learn About Causes and Predictions
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In this activity, learners will compare predicted and observed tides using data from The National Oceanic and Atmospheric Administration(NOAA).

Make Your Own Telescope
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Discover how a refracting telescope works by making one from scratch using common items. This telescope won't have a tube so the learner can see how an image is formed inside the telescope.
The Blue Crab's Chesapeake Journey
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In this data collection activity about crabs, learners use data from the Virginia Institute of Marine Science (VIMS) trawl survey to determine the areas of the Chesapeake Bay that are being used by bl
Making An Impact!
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In this activity (on page 14 of PDF), learners use a pan full of flour and some rocks to create a moonscape.
Tsunami: Waves of Destruction
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In this activity, learners use tsunami time travel maps to predict how long it will take a tsunami to reach the shore.

Inverted Bottles
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In this activity, learners investigate convection by using food coloring and water of different temperatures.

Using Different Models of Earth
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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.

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.

Telescopes as Time Machines
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This fun, nighttime hands-on astronomy activity lets learners explore how long it takes for light from different objects in the universe to reach Earth.

Evolution in Action: Isolation and Speciation in the Lower Congo River
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In this guided discussion activity, learners watch a video about Central Africa's Lower Congo River, one of the most biologically diverse rivers in the world.

Sizing Up Temperature
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In this activity, learners explore Charles' Law in a syringe.