Work And Energy Vocab

Question 0

Efficiency

Answer 0

Ratio of the output work done by the machine to the input work done on the machine, expressed as a percentage.

Question 1

Work

Answer 1

Transfer of energy when a force is applied over a distance; measured in joules.

Question 2

Mechanical advantage

Answer 2

Ratio of the output force exerted by a machine to the input force applied to the machine.

Question 3

Energy

Answer 3

The ability to cause change, measured in joules.

Question 4

System

Answer 4

A region or set of regions around which a boundary can be defined.

Question 5

Kinetic energy

Answer 5

Energy a moving object has because of its motion; determined by the mass and speed of the object.

Question 6

Potential energy

Answer 6

Energy that is stored due to the interactions between objects.

Question 7

Elastic potential energy

Answer 7

Energy that is stored by compressing or stretching an object.

Question 8

Chemical potential energy

Answer 8

Energy that is due to chemical bonds.

Question 9

Gravitational potential energy

Answer 9

Energy that is due to the gravitational force between objects.

Question 10

Law of conservation of energy

Answer 10

States that energy cannot be created or destroyed.