13.2 test

Question 1

what can energy do

Answer 1

move matter and work

Question 2

what are the two types of energy

Answer 2

kinetic and potential

Question 3

kinetic energy is ____

Answer 3

motion

Question 4

kinetic energy depends on

Answer 4

the mass of an object, velocity of an object

Question 5

what is the formula for kinetic energy

Answer 5

1/2 x mass / velocity^2

Question 6

potential energy

Answer 6

energy that is stored in an object due to its conditions or position

Question 7

what is PE caused by

Answer 7

gravity- gravitational potential energy

Question 8

gravitational potential energy

Answer 8

potential energy stored due to gravity

Question 9

what does GPE depend on

Answer 9

gravity, mass, height

Question 10

what is the formula for potential energy

Answer 10

mass x gravity x height

Question 11

elastic potential energy

Answer 11

energy stored in an object that will return to its original state

Question 12

what are the forms of energy

Answer 12

mechanical,thermal,chemical,electrical,electromagnetic,nuclear, sound energy

Question 13

energy convesion

Answer 13

a change from one form of energy to another

Question 14

energy conversions need _____

Answer 14

movement

Question 15

movement

Answer 15

still

Question 16

kinetic energy is ____

Answer 16

moving

Question 17

energy conversation=

Answer 17

energy transfer

Question 18

what Is the law of conservation

Answer 18

energy cannot be created not detsroyedh

Question 19

t is the theory of relativity

Answer 19

energy can be created by detsroying tiny amounts of matter

Question 20

the GPE is often converted into ____

Answer 20

kinetic energy of motion

Question 21

mechanical energy =

Answer 21

KE + PE

Question 22

what is einsetins equation

Answer 22

e = mc^2

Question 23

what are non renewable resources

Answer 23

exist in limited quantities and once used cant be replaced except over one million years

Question 24

what are examples of nonrenewable resources

Answer 24

oil, natural gas, coal, uranium (fossil fuels)

Question 25

where are fossil fuels formed

Answer 25

under ground what

Question 26

are the good and bad things about fossial feuls

Answer 26

good things: readily available, inexpensive bad things: created pollution, not much in the u.s

Question 27

renewable energy resources

Answer 27

resources that can be replaced in a relatively short period of time

Question 28

where do renewable resources form

Answer 28

indirectly from the sun

Question 29

what are examples of renewable energy sources

Answer 29

reusable energy, hydroelectric, solar, geo electric, wind, bio mass, nuclear fusion

Question 30

what are the good things about hydroelectric energy

Answer 30

no pollution, low cost to producew

Question 31

what are the bad things about hydro electric energy

Answer 31

dams block water, causes environmental problems

Question 32

Ke of hydroeletricy is used to

Answer 32

turn turbines

Question 33

solar energy

Answer 33

sunlight converted into usable energy - sunlight going through a window

Question 34

active solar

Answer 34

sun heats flat collection platers through which water flows - sun converted into electrical energy with solar cells

Question 35

geothermal energy

Answer 35

thermal energy found in the Earth's surface - does not pollute, created steam and produces electricity

Question 36

bio mass energy

Answer 36

stores in living things, uses wood and corn stocks to create thermal energy