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Rusty Penny
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In this easy chemistry activity, learners submerge pennies in different liquids (water, lemon juice, vinegar, liquid hand soap, salt water, and baking soda mixed with water) to observe which best clea
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A Funny Taste
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In this activity, learners explore the different salinities of various sources of water by taste-testing.
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Salt 'n Lighter
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In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater.
Investigating Density Currents
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In this lab activity, learners explore how to initiate a density current. Learners measure six flasks with different concentrations of salt and water (colored blue).
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Surface Tension Icebreaker
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This is a quick activity (located on page 2 of the PDF under Nasturtium Leaves Activity) about surface tension.
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Diet Light
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In this quick activity, learners observe how the added sugar in a can of soda affects its density and thus, its ability to float in water.
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Acid Rain Effects
Learners conduct a simple experiment to model and explore the harmful effects of acid rain (vinegar) on living (green leaf and eggshell) and non-living (paper clip) objects.
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Radioactive Decay of Candium
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In this simulation, learners use M&M™ candy to explore radioactive isotope decay.
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Composting
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In this environmental science activity, learners research what is essential for plant life and the necessary components of soil to support plants.
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Why Doesn’t the Ocean Freeze?
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In this activity, learners explore how salt water freezes in comparison to fresh water.
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Jem's Pykrete Challenge
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In this activity, learners make pykrete by freezing a mixture of water and a material like cotton wool, grass, hair, shredded paper, wood chips, or sawdust.
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How Big is Small
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In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.
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Shell Shifts
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Ocean acidification is a big issue due to the amount of carbon dioxide humans release. CO2 in the atmosphere is absorbed into the ocean thus changing its acidity.
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Submarine: Soda Cup Lander
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In this activity (on page 2), learners create a submarine using a plastic cup. This is a fun way to learn about buoyancy and density.
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Percentage of Oxygen in the Air
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In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust.
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Biodomes Engineering Design Project
In this design-based activity, learners explore environments, ecosystems, energy flow and organism interactions by creating a model biodome. Learners become engineers who create model ecosystems.
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Spectroscope
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In this activity (posted on March 12, 2011), learners follow the steps to construct a spectroscope, a tool used to analyze light and color.
Pepper Scatter
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In this activity, learners explore the forces at work in water. Learners experiment to find out what happens to pepper in water when they touch it with bar soap and liquid detergent.
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Carbon Dioxide Removal
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In this experiment using sprigs of Elodea, learners will observe a natural process that removes carbon dioxide (CO2) from Earth's atmosphere.
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Foam Tower
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In this activity (page 1 of the PDF under SciGirls Activity: Water Slides), learners will whip up some suds with a cup of water and a tablespoon of dish soap until the bubbles are stiff enough to star