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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.
Cool Trees
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This warm weather activity introduces learners to the impact trees have on blocking the sun's heat and reducing temperature on the Earth's surface.
Exploring Earth: Investigating Clouds
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“Exploring Earth: Investigating Clouds” is a hands-on activity in which visitors create a cloud in a bottle and explore it with laser light.
Using Solar Energy
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In this activity, learners discover how solar energy can be used to heat water.
What Causes Wind?
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In this sunny day experiment, learners measure and compare how quickly light and dark colored materials absorb heat.
Cool It!
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Learners make a refrigerator that works without electricity. The pot-in-pot refrigerator works by evaporation: a layer of sand is placed between two terra cotta pots and thoroughly soaked with water.
Sinking Water
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In this experiment, learners float colored ice cubes in hot and cold water.
Differing Densities: Fresh and Salt Water
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In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting.
Water Cycle in a Bag
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In this activity, learners will explore the water cycle by creating a small atmosphere.
We all Scream for Ice Cream
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In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.
Solar Water Heater
Learners work in teams to design and build solar water heating devices that mimic those used in residences to capture energy in the form of solar radiation and convert it to thermal energy.
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.
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.
Leaf it to Me
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In this activity, learners observe the effect of transpiration as water is moved from the ground to the atmosphere.
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.
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.
Let's Go Ice Fishing
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In this activity, learners are challenged to lift a floating ice cube out of a glass of water using just one end of a piece of string.
Investigating Convection
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This experiment is designed to illustrate how fluids, including water, have the ability to flow.
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.
The Rain Man
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In this activity, learners observe the hydrologic cycle in action as water evaporates and condenses to form rain right before their eyes.