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The Scoop on Habitat
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Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.
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).
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.
Desert Water Keepers
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In this outdoor, sunny day activity, learners experiment with paper leaf models to discover how some desert plants conserve water.
What Molecules Make the Holes in Bread?
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In this activity, learners will discover why there are holes in bread.
Under Pressure
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In this experiment, learners examine how pressure affects water flow. In small groups, learners work with water and a soda bottle, and then relate their findings to pressure in the deep ocean.
Using Solar Energy
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In this activity, learners discover how solar energy can be used to heat water.
Water Underground
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Many people get water from a source deep underground, called groundwater.
To Dye For
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Learners add two dyes to mineral oil and water, and then compare their miscibility (how well they mix) in each.
Float Your Boat
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In this physics activity, learners will explore buoyancy.
Sinking Water
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In this experiment, learners float colored ice cubes in hot and cold water.
Balloon in a Flask
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Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.
What Does Life Need to Live?
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In this astrobiology activity (on page 11 of the PDF), learners consider what organisms need in order to live (water, nutrients, and energy).
Indicating Electrolysis
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Electrolysis is the breakdown of water into hydrogen and oxygen. This Exploratorium activity allows learners to visualize the process with an acid-based indicator.
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.
Investigating Convection
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This experiment is designed to illustrate how fluids, including water, have the ability to flow.
Moisture Makers
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In this outdoor activity, learners compare the moisture released from different kinds of leaves and from different parts of the same leaf, by observing the color change of cobalt chloride paper.
Floating Paperclip and Other Surface Tension Experiments
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In this activity, learners experiment with surface tension using everyday household items such as strawberry baskets, paperclips, liquid dish soap, and pepper.
Geyser
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This Exploratorium activity can be used in many contexts because geysers are great opportunities for learning about heat and temperature changes as well as geological/space science phenomena.
Electrostatic Water Attraction
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In this activity, learners conduct a simple experiment to see how electrically charged things like plastic attract electrically neutral things like water.