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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.
Turning the Air Upside Down: Warm Air is Less Dense than Cool Air
Learners cover a bottle with a balloon. When they immerse the bottle in warm water, the balloon inflates. When they immerse the bottle in a bowl of ice, the balloon deflates.
Weather Stations: Winds
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In this activity, learners use a toaster to generate wind and compare the appliance's heat source to Jupiter's own hot interior. Learners discover that convection drives wind on Jupiter and on Earth.
Vibrating Pennies
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Conduct a simple experiment to explore how temperature changes can make things expand or contract.
The Ups and Downs of Thermometers
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In this activity, learners examine the parts of a thermometer. After placing a thermometer in hot and cold water, learners look at molecular model animations of the liquid in a thermometer.
Changing the Density of a Liquid: Heating and Cooling
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Learners investigate how the temperature of water affects its density.
Temperature Affects Dissolving
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Learners design their own experiment to compare how well cocoa mix dissolves in cold and hot water. They will see that cocoa mix dissolves much better in hot water. Adult supervision recommended.
Air Pressure
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In this experiment, learners use a blow dryer and water bottle to observe and record changes in air pressure caused by changes in temperature.
Heat Capacity: Can't Take the Heat?
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Why is ocean water sometimes the warmest when the average daily air temperature starts to drop? In this activity, learners explore the differing heat capacities of water and air using real data.
Change in Temperature: Exothermic Reaction
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Learners add calcium chloride to a baking soda solution and observe an increase in temperature along with the production of a gas and a white precipitate. These are all signs of a chemical reaction.
Turning the Air Upside Down: Spinning Snakes
Learners color and cut out a spiral-shaped snake. When they hang their snake over a radiator, the snake spins.
Keep it Cool
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In this activity, learners explore how engineers have met the challenge of keeping foods, liquids, and other items cool.