Chapters 14-15 - Light

Question 1

Light acts on our ? to make things ?

Answer 1

eyes

visible

Question 2

Light ? need molecules to carry it

Answer 2

doesn’t

Question 3

Light is a form of ?

Answer 3

energy

Question 4

Light travels at ? miles/sec in a ?

Answer 4

186,000

vacuum

Question 5

? rays come from a nucleus that U.S. breaking down and giving off radiation

Answer 5

Gamma

Question 6

? use the ionosphere to bounce off and travel further

Answer 6

short waves

Question 7

radar stands for ?

Answer 7

radio detection and ranging

Question 8

x-Rays can ?

Answer 8

damage cells

Question 9

Heat is known as ? waves

Answer 9

infrared

Question 10

am and fm waves carry the sound and picture for ?

Answer 10

TV

Question 11

black light is also known as ?

Answer 11

ultraviolet light

Question 12

am and fm radio waves have to changes to ? waves before we can listen to them

Answer 12

sound

Question 13

“below red”

Answer 13

infrared

Question 14

“beyond violet”

Answer 14

ultraviolet

Question 15

radar is a kind of ? wave

Answer 15

radio

Question 16

microwaves act on ? in the food to cook it from the ? to the ?

Answer 16

water

inside

outside

Question 17

radar is used to determine the ? and the ? of an object

Answer 17

distance

speed

Question 18

2 actions of ultraviolet light

Answer 18

fluorescent lighting

kills germs

Question 19

a(n) ? object reflects light

Answer 19

illuminated

Question 20

the moon is an example of a(n) ? object

Answer 20

illuminated

Question 21

a(n) ? object produces light

Answer 21

luminous

Question 22

the sun is an example of a(n) ? object

Answer 22

luminous

Question 23

? light comes from the sun

Answer 23

white

Question 24

? light is only 1 color

Answer 24

monochromatic

Question 25

? light is given off by a laser

Answer 25

monochromatic

Question 26

? light is made up of all the colors mixed together

Answer 26

white

Question 27

? light has many wavelengths

Answer 27

white

Question 28

reflection of light definition

Answer 28

when light hits the surface of an object and vouches back from it

Question 29

refraction of light definition

Answer 29

bending of light as it passes from one material to another

Question 30

dispersion of light definition

Answer 30

when white light separates into all the different colors

Question 31

law of reflection says:

Answer 31

the angle of incidence is exactly equal to the angle of reflection

Question 32

2 parts of the law of refraction

Answer 32

1) light moves into a dense material (towards normal)

2) light move into the air (away from normal)

Question 33

why does an object look a certain color

Answer 33

all colors are absorbed except that certain color

Question 34

light year definition

Answer 34

distance light travels in 1 year (measurement)

Question 35

normal when you figure light angles definition

Answer 35

perpendicular line to the surface of the mirror

Question 36

what causes a mirage to form?

Answer 36

light bends in different layers of air with different densities

Question 37

Lens definition

Answer 37

clear object with a curved surface that bends light

Question 38

3 primary colors of light

Answer 38

red
blue
green

Question 39

in 1 year light could pass through ? miles

Answer 39

6 trillion

Question 40

straight lines that light moves in

Answer 40

rays

Question 41

rays of light that come from a light source are called ? rays, while hair at bounce off are called ? rays

Answer 41

incident

reflected

Question 42

mirror that’s flat and not curved at all is a ? mirror

Answer 42

plane

Question 43

colors of light that make up white that make up white light are called the ? and make up ROYGBIV

Answer 43

spectrum