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Friday, June 20, 2008

…Heating of Earth’s Land and Water Surface…:)

Problem: Which absorbs and loses heat faster, land or water?

Objective: To determine, between land and water, which absorbs and loses heat faster

Materials: 2 small jars of the same size, water, soil, 2 thermometers, sunlight

Procedure:

-Fill one jar with water, and the other with soil. Place a thermometer in each jar, and determine their temperature.
-Place the jars together under the sun so that they receive the same amount of heat. Take and record readings from each thermometer every 10 minutes for half an hour.
-Move the jars away from the heat source. Take and record readings from each thermometer every 10 minutes for half an hour.
-Record the observations.
-Compare the ability of land and water to absorb and release heat.

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