Hot Ice
Grade Levels:
K-3
Question:
Which will become ice faster, hot or cold water?
Possible Hypotheses:
Cold water will freeze faster/slower than hot water.
Materials:
Two Styrofoam cups
Hot tap water
Cold tap water
Procedure:
- Fill one cup with very cold water. Fill the other with the same amount of very hot water. Label one cup hot and the other cup cold.
- Put both cups in the freezer and check every 10-15 minutes. Record which one begins to freeze first.
- Leave them in the freezer until the following day. Take them out and see if there is any difference in the ice cubes.
Analysis and Conclusion:
Which one froze first? Did both cubes end up being the same size?
Reprinted with the permission of the NEED Project. © 2008 National Energy Education Development Project - All Rights Reserved.
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