Teacher Site Map
3rd Grade Science Core
USOE Science Home Page

Let's Warm Up!

Have you ever rubbed your hands together to get warm? Try it! Rub your hands together really fast for 30 seconds. They feel much hotter. Rubbing produces heat.
Try this activity to see for yourself.
  • Paper clip
  • Assorted objects to test:
    • Craft sticks
    • Rocks
    • Socks
    • Blocks
    • Jar lids
    • Etc.

As you have seen heat is made by rubbing things together. Some objects produce more heat than others, but heat is always produced.

Download the plug-ins: Get Adobe Acrobat Reader, and Get Quicktime Player. (The QuickTime plug-in is needed to play sounds and movies correctly.)

Want to share photos of you or your friends doing this activity? Send it in an e-mail with the following information:

  1. The title of the activity
  2. The URL (Internet address)
  3. Your name.

Remember that no pictures can be used that show student faces or student names on it. 

Teachers should view the Teacher Site Map to relate Sci-ber text and the USOE 3rd grade science core.

Updated October 24, 2008 by: Glen Westbroek

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