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Closer Look Questions
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Simple Machines



1

What are simple machines?
2

What is the difference between an effort force and a resistance force?
3

How do simple machines work for you?
4

What are the six kinds of simple machines?

Solar Technologies



5

Briefly describe each of the eight main categories of solar energy use.
6

Which technology of solar energy seems to make the most economic sense today?
7

Which solar energy technologies are designed primarily to produce electricity?
8

Which solar energy technologies are used today to produce a liquid fuel?







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