# U1 Test Energy

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Energy is…

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## Description and Tags

Study guide and extra help videos on the canvas agenda. PRACTICE THE MATH AND REVIEW PAST QUIZZES!!! The formulas that will be provided on the test: F= ma W=Fd P=W/t KE= 1/2mV2 GPE=mgh Good luck on the test! :)

### 26 Terms

1

Energy is…

the ability to do work

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2

Work is done when…

a force is applied to move an object.  The object must move in order to be doing work and the object must move in the same direction of the force.

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3

How do you measure energy and work?

Joules (J)

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4

How is work calculated?

by multiplying the force applied by the distance that an object moves.

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5

How is force measured?

Newtons (N)

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6

How do you measure gravity?

multiply by 9.8

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7

How to turn lbs into kg?

divide by 2.2

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8

Power is the rate…

at which work is being done and is measured in Watts (W)

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9

Power is calculated by…

dividing the work by the time taken to do the work.

P= W/t

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10

Law of conservation of energy states that

energy cannot be created or destroyed, but simply transferred from one object to another or converted from one form to another.

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11

An example of Law of conservation of energy

strike a match and its chemical potential energy is converted into heat and light energy.

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12

What happens when energy is transferred or converted?

it is inevitable that some of the energy is converted into wasted heat energy due to friction of the moving parts.

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13

The two major categories of energy are…

kinetic and potential

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14

Kinetic energy (KE) is…

energy due to the mass and movement of an object.

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15

Potential energy (PE) is….

appears in many different forms, and is defined as the energy in matter due to its position or the arrangement of its parts.

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16

Gravitational Potential Energy (GPE)…

appears in many different forms, and is defined as the energy in matter due to its position or the arrangement of its parts.

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17

GPE depends on…

the mass of the object, the height above the ground, and the pull of gravity.

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18

Elastic Potential Energy (EPE)

A stretched rubber band has the potential to do work or change things.

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19

Chemical Potential Energy (CPE)

The energy stored in molecules

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20

A battery has chemical potential energy which is then converted into

Electrical Energy (EE)

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21

Thermal Energy (TE)

The movement of molecules that make up the object.

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22

Light Energy (LE)

is an example of electromagnetic energy.

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23

Sound Energy is made up of…

vibrations of matter.

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24

Thermal Energy consists of…

moving molecules in air or in an object.

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25

Mechanical energy

is the combination of kinetic and potential energy of a moving object.

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26

How do we create electrical energy from fossil fuels?

By burning gas, we create heat which powers a turbine. The rotation of this turbine spins a generator which creates electricity.

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