Chapter 6 Vocabulary Flashcards Preview

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Flashcards in Chapter 6 Vocabulary Deck (19)
1

What is the rate at which work is done?

Power

2

What is the ability to do work?

Energy

3

What is energy due to position?

Potential Energy

4

What is the energy of motion?

Kinetic Energy

5

What is energy due to an objects elevated position?

Gravitational Potential Energy

6

What is work= change in kinetic energy?

Work Energy Therom

7

What is energy cannot be created or destroyed. It can be transformed or transferred from one form to another but the total amount of energy never changes?

Law of Conservation of Energy

8

What is a device that can multiply forces or change their direction?

Machine

9

What contains an effort arm, resistance arm, and fulcrum?

Lever

10

What is the point on a lever that does not move?

Fulcrum

11

What is the portion of the lever where you apply force?

Effort Arm

12

What is the portion of the lever that is applying a force to move an object?

Resistance Arm

13

What has an effort force at one end, resistance force at the other, and fulcrum in the middle?

Ex. Hammer, see-saw

First Class Lever

14

What has an effort force on one end, resistance force in the middle, and fulcrum at the other end?

Ex. Wheelbarrow

Second Class Lever

15

What has an effort force in the middle, resistance force on one end, and fulcrum on the other end?

Ex. Mom, broom

Third Class Lever

16

What is a special kind of lever that has a wheel with a groove in it?

Pulley

17

What describes how much work a machine does? (Cannot exceed 100%)

Efficiency

18

What is the unit for work?

Joule

19

What comes from nuclear energy in the earth?

Geothermal