Energy Test

Question 1

electromagnetic energy

Answer 1

energy which travles through space in waves
ex- infared, ultraviolet, gamma rays, x rays, micro-waves, visible light, radio waves

Question 2

difference among EME is

Answer 2

their wavelength

Question 3

kinetic energy

Answer 3

energy of motion
faster= more KE
slower= less KE

Question 4

potential energy

Answer 4

stored energy of position
higher= more PE
lower= less PE

Question 5

conduction

Answer 5

heat flow in a solid by collsions of molecules

Question 6

heat source

Answer 6

high energy

Question 7

heat sink

Answer 7

low energy

Question 8

heat always flows from a

Answer 8

source to a sink

Question 9

adding cold is

Answer 9

impossible

Question 10

bigger temp diference =

Answer 10

faster heat flow

Question 11

closed energy system

Answer 11

no heat

Question 12

heat lost at source=

Answer 12

heat gained a sink

Question 13

specific heat

Answer 13

a physical property of all materials. shows how quickly a substance will change temperature

Question 14

heating and cooling is when

Answer 14

a substance absorbs or radiates heat energy

Question 15

the lower the specific heat

Answer 15

the bigger the change in temperature ( heating)

Question 16

the higher the specific heat

Answer 16

the smaller change in temperature ( heating and cooling)

Question 17

low specific heat

Answer 17

heats and cools quickly

Question 18

high specific heat

Answer 18

heats and cools slowly

Question 19

liquid water has the

Answer 19

highest specific heat of any substance

Question 20

energy absorbed

Answer 20

energy is ¨soaked in” at the surface when this happens temp goes up

Question 21

energy reflected

Answer 21

bounces off the surface not absorbed
temp stays the same

Question 22

a good absorber

Answer 22

dark,dull, rough

Question 23

good radiator

Answer 23

good absorber

Question 24

good reflector

Answer 24

light, shiny smooth

Question 25

alepedo

Answer 25

reflected energy from a surface

Question 26

change in state

Answer 26

no change in temp

Question 27

melt

Answer 27

add 334 J/g

Question 28

freeze

Answer 28

remove 334 J/g

Question 29

vaporize

Answer 29

add 2260 J/g

Question 30

condense

Answer 30

remove 2260 J/g

Question 31

convection

Answer 31

heat flow in a gas or liquid caused by a difference in density

Question 32

hot

Answer 32

less dense, rises

Question 33

cold

Answer 33

more dense, sinks

Question 34

what is true about electromagnetic energy

Answer 34

gamma rays have a shorter wavelength than visible light

Question 35

what color has the shortest wavelength

Answer 35

violet

Question 36

what form of electromagnetic energy has the longest wavelength

Answer 36

radio waves

Question 37

list the forms of electromagnetic enerrgy in longest to shortest wavelength

Answer 37

radio waves, infared rays, visible light, ultra violet rays

Question 38

basic difference among ultraviolet visible and infared radiation

Answer 38

wavelength

Question 39

as the temp of an object approaches absolute zero the amount of electromagnetic energy radiated will

Answer 39

decrease

Question 40

which energy transformation occurs as rock falls freely from the top of a vertical cliff

Answer 40

the rocks potential energy and kinetic energy decrease

Question 41

which forms of em energy causes skin cancer

Answer 41

ultraviolet

Question 42

which of these forms of em energy is the same as heat energy

Answer 42

infared

Question 43

during which phase change does water release the most heat energy

Answer 43

condensation

Question 44

which process absorbs 334 joules of energy for each gram of water

Answer 44

melting

Question 45

which statement best describes the pattern of energy flow in a closed system

Answer 45

energy flows from energy sources to energy sinks

Question 46

which type of land surface has the highest albedo

Answer 46

light, colored, shiny , smooth

Question 47

an object that is a good absorber of electromagnetic energy is also a good

Answer 47

radiator of electromagnetic energy

Question 48

by which process is heat energy transfered when molecules within a substance collide

Answer 48

conduction

Question 49

which phase change requires water to gain 2260 joules per gram

Answer 49

liquid water vaporizing

Question 50

land surfaces of earth hear more rapidly than water surfaces because

Answer 50

land has a higher specific heat than water

Question 51

when snow is melting the temperature of snow will

Answer 51

remain the same

Question 52

which earth surface usually reflects the most incoming solar radiation

Answer 52

snow cover