Download Document

Name _______________________________Class __________________ Date __________________
Work and Machines Vocabulary Activity
p.208-229
Use pages 208-229 and the word bank provided to fill in the blanks below. After filling in the blanks, find the
words in the puzzle on the back. Keep this to study with and turn in with your next notebook check.
Watt
Wedge
Work
Efficiency
Compound
Input
Fixed
Lever
Power
Moveable
Machine
Word Bank
Output
Simple
Joule
Fulcrum
Block and Tackle
Wheel and axle
Inclined plane
Screw
Pulley
Advantage
1. The unit used to express energy is the ______________________.
2. An inclined plane that is wrapped in a spiral around a cylinder is a(n) ______________________.
3. The rate at which work is done is called ______________________.
4. When a force causes an object to move in the direction of the force, ______________________ occurs.
5. The work you do on a machine is called work ______________________.
6. A simple machine that is a straight, slanted surface is a(n) ______________________.
7. The mechanical ______________________ of a machine compares the input force with the output
force.
8. All machines are constructed from six ______________________ machines.
9. When two kinds of pulleys are used together, the system is called a(n) ______________________.
10. A simple machine consisting of a bar that pivots at a fixed point is a(n) ______________________.
11. A device that helps make work easier by changing the size or direction of force is a(n)
______________________.
12. A double inclined plane that moves is a(n) ______________________.
13. Machines that are made up of two or more simple machines are called ______________________
machines.
14. A simple machine that consists of two circular objects of different sizes is a(n)
______________________.
15. A simple machine that has a grooved wheel that holds a rope or a cable is a(n)
______________________.
16. The work done by a machine is called work ______________________.
17. The fixed point at which a lever pivots is called a(n) ______________________.
Name _______________________________Class __________________ Date __________________
18. Two kinds of pulleys are ______________________ pulleys and ______________________ pulleys.
19. The unit used to express power is the ______________________.
20. Mechanical ______________________ is a comparison of a machine’s work output with the work
input.