MATERIALS NEEDED: enclosed room thermometer step ladder paper pencil

STEPS TO FOLLOW:

In an enclosed room, place the thermometer on the floor. Wait at least a minute, then record the room temperature. Stand and hold the thermometer approximately 4 feet above the floor. Wait at least a minute, then record the room temperature, again.

Climb at least 3 steps up the ladder with the thermometer. Wait at least a minute, then record the room temperature. What did you discover? (The temperatures were different.) Where is the colder air? (Near the floor.) Where is the warmer air? (Farthest from the floor.)

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Last modified: Tue Mar 24 17:31:32 PST 1998

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