Energy Unit Vocab

Question 1

Kinetic Energy

Answer 1

The energy a moving object has because of its motion.

Question 2

Potential Energy

Answer 2

Stored energy due to position.

Question 3

Elastic Potential Energy

Answer 3

Energy stored by something that can stretch or compress, such as a rubber band or spring.

Question 4

Chemical Potential Energy

Answer 4

Energy stored in chemical bonds.

Question 5

Gravitational Potential Energy

Answer 5

Anything that can fall has stored energy.

Question 6

Mechanical Energy

Answer 6

The total amount of potential and kinetic energy in a system and can be expressed by this equation.

Question 7

Law of Conservation of Energy

Answer 7

States that energy cannot be created or destroyed.

Question 8

Work

Answer 8

Transfer of energy that occurs when a force makes an object move.

Question 9

Power

Answer 9

The amount of work done in one second, the rate at which work is done.

Question 10

Machine

Answer 10

A device that makes work easier.

Question 11

Input Force

Answer 11

The force that is applied to the machine.

Question 12

Output Force

Answer 12

The force applied by the machine.

Question 13

Mechanical Advantage

Answer 13

The ratio of the output force to the input force.

Question 14

Efficiency

Answer 14

A measure of how much of the work put into a machine is changed into useful output work by the machine.

Question 15

Simple Machine

Answer 15

A machine that does work with only one movement of the machine.

Question 16

Lever

Answer 16

A bar that is free to pivot or turn around a fixed point.

Question 17

Pulley

Answer 17

A grooved wheel with a rope, chain, or cable running along the groove.

Question 18

Wheel and Axle

Answer 18

A simple machine consisting of a shaft or axle attached to the center of a larger wheel, so that the wheel and axle rotate together.

Question 19

Inclined Plane

Answer 19

A sloping surface that reduces the amount of force required to do work.

Question 20

Screw

Answer 20

An inclined plane wrapped in a spiral around a cylindrical post.

Question 21

Wedge

Answer 21

An inclined plane with one or two sloping sides.

Question 22

Compound Machine

Answer 22

Two or more simple machines that operate together.