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Heat Experiment - Cold Hands
 
Cold hands and friction
Materials you will need:

• Your Hands
• Your Arms
• Your Legs
 
Steps:

1.  Put your cold hands together and start rubbing them together slowly. Do they still feel cold?

2. Now start rubbing them together really fast. How do they feel now? Are they warmer?

3. Next, try rubbing your hands up and down your thighs really fast. This will warm both your hands and legs.

4. Try crossing your arms and rubbing your hands up and down the tops of your arms really fast. This will warm both your hands and arms.

Note:  Try holding your breath and rubbing your hands together.  Do you think your hands got warmer faster? 

This is called friction. When you rub things together you create friction and friction is what causes heat.

 
 
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