Write the letter of the matching definition next to each term.
1. efficiency
A. The maintenance of a certain quantities unchanged during chemical reactions or physical
2. kinetic
B. Relating to the motion of material bodies and the forces associated therewith
3. machine
C. To have a tendency or disposition to do or be something
4. effort
D. The power to do work or make things move
5. conservation
E. A shaft on which a wheel rotates
6. input
F. Strength or the ability to control things
7. force
G. Using ___ or tools or devices
8. lever
H. A simple machine consisting of a wheel with a groove in which a rope can run to change
9. output
I. Any mechanical or electrical device that transmits or modifies energy to perform or assist in
10. arm
J. Job or effort to get something done
11. mechanical
K. Forces that provide energy and direction
12. work
L. Engine that converts mechanical energy into electrical energy by electromagnetic induction
13. energy
M. A statement that expresses a personal opinion or belief or adds information
14. potential
N. Skillfulness in avoiding wasted time and effort
15. wedge
O. The pivot about which a lever turns
16. fulcrum
P. An aircraft that has a fixed wing and is powered by propellers or jets
17. power
Q. Use of physical or mental energy
18. watt
R. A division of some larger or more complex organization
19. generator
S. A large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese
20. pulley
T. A rigid bar pivoted about a fulcrum
21. wheel
U. A unit of power equal to 1 joule per second
22. inclined
V. Production of a certain amount
23. axle
W. The difference in electrical charge between two points in a circuit expressed in volts
24. plane
X. A push or a pull