1. Read the paragraph. Use context clues to write a general definition for each underlined word. Use a dictionary to write an exact definition.
   
   A lever is a bar that is free to move about a fulcrum. You may have used a long bar of some kind to lift a large rock. Without the bar, or the lever, you would not have been able to lift the rock without help from someone else. Furthermore, unless you placed a rock, a log, or some other kind of support underneath the lever, the lever would not have lifted the rock. It would have bent and possibly would have broken. The rock or log is an example of a fulcrum. Scissors, can openers, and shovels are examples of levers that use fulcrums.

Adapted from the “Intermediate Academic Upgrading-Science” learning packages; IA U-S 6.7

2. Lever
   
   
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3. Fulcrum
   
   
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