rection: Fill in the blanks.
1. The Sun
2. Electricity
3.
is the main source of light and heat on earth.
is a very common source of heat at home.
is also a source of heat, they come from very
old life forms that decomposed over a long period of time.
4. friction is produced
between two surfaces when one
object rubs against one another.
5. Coal natural gas oil are set
Performance Tasks #1 (Module 1)
Direction : Draw 5 electrical appliances producing heat that you
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Know.
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Derection:Fill in the blanks.
1.the sun
2.electricity
3.fire
The sun is the main source of ligth and heat on earth.
Fire is a very common source of heat at home.
Electricity is also a source of heat,they come from very old life forms that decomposed over a long period time
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