Chapter 12 – Light And Color

Question 1

Electromagnetic waves that the human eye can perceive

Answer 1

Visible light

Question 2

Mixture of all the colors of light

Answer 2

White

Question 3

Weaker white light

Answer 3

Gray

Question 4

The absence of all color

Answer 4

Black

Question 5

Light rays from distant object reflected by heated air so that appears closer

Answer 5

Mirage

Question 6

Produced by refracted starlight as it travels between air of different densities

Answer 6

Scintillation

Question 7

Lighter edges around a shadow

Answer 7

Penumbra

Question 8

The dark part of a shadow

Answer 8

Umbra

Question 9

Beam of light with all its waves aligned in the same direction

Answer 9

Polarized

Question 10

Arrangement of all forms of electromagnetic radiation in order of frequency and wavelength

Answer 10

Electromagnetic spectrum

Question 11

System using microwaves or radio waves to measure distance and direction of faraway objects

Answer 11

Radar

Question 12

Process of photon emission by stimulation of already-excited atoms

Answer 12

Stimulated emission

Question 13

Devise which generates and amplifies high-energy beams of light

Answer 13

Laser

Question 14

Beam of light with only one frequency

Answer 14

Monochromatic

Question 15

3-D image produced by laser light

Answer 15

Hologram

Question 16

Horizontal distortion of an object traveling at very high speed

Answer 16

Lorentz contraction

Question 17

What book did Sir Isaac Newton discuss the colors and properties of light in?

Answer 17

Optiks

Question 18

Scottish physicist who demonstrated that light consisted of electromagnetic waves

Answer 18

(James Clerk) Maxwell

Question 19

Phenomenon that light above a certain frequency can knock electrons loose
from atoms of certain metals

Answer 19

Photoelectric effect

Question 20

Electromagnetic waves traveling as photons

Answer 20

Light

Question 21

Particles that make up light

Answer 21

Photons

Question 22

Six Basic colors of the visible spectrum

Answer 22

Red🦀
Orange🍂
Yellow🐝
Green🍀
Blue💦
Violet⚛

Question 23

The additive primary colors

Answer 23

Red❤️
Green💚
Blue💙

Question 24

Seven broad categories of the electromagnetic spectrum in order of increasing frequency

Answer 24

Radio waves 
Microwaves 
Infrared waves 
Visible light 
Ultraviolet radiation 
X-Ray 
Gamma ray

Question 25

Single frequency, coherent, intense light

Answer 25

Laser light(not spreading🔦!)

Question 26

Technique of transmitting light through optical fibers

Answer 26

Fiber optics

Question 27

Apparent slowing of time for a rapidly moving object

Answer 27

Time dilation

Question 28

What theory says that gravity is the results of the geometry in space?

Answer 28

General theory of relativity

Question 29

Describe the properties of an electromagnetic wave. | (Describe orientation and where it can travel)😊

Answer 29

Two transverse waves, one and electrical field and one a magnetic field, oscillating at right angles to each other // And of course light can travel through empty space

Question 30

How does a prism separate the different wavelengths of light?

Answer 30

By refracting the light that passes through it

Question 31

Briefly describe the difference between a virtual image and real image

Answer 31

Virtual image – appears to be behind the mirror; no light actually passes through the image Real image – forms in front of the mirror; light passes through the image

Question 32

Tell the difference between a node and an antinode

Answer 32

Dark fringe formed as light from different parts of the slit interferes destructively(for a node) Light fringe formed as light from different parts of it interferes constructively(for the antinode)

Question 33

On what does the energy of a photon depend?

Answer 33

It's frequency!😛

Question 34

What theory uses the constant speed of light to explain high-speed motion?

Answer 34

Special theory of relativity

Question 35

What is a concave lens?

Answer 35

Concave lens causes light to diverge; is curved inward; and causes objects to appear more distant

Question 36

What is a convex lens?

Answer 36

Convex lens curve outward; causes light to converge; and magnifies objects

Question 37

Which is longer – a second on Jupiter or a second on our earth? And why?

Answer 37

A second on Jupiter would be longer than a second on earth. The reason why is because Jupiter has stronger gravity than earth.