Chapter 9

Question 0

A subatomic particle that makes up electromagnetic waves.

Answer 0

Votons

Question 1

An ___________ is made up of vibrating __________ and _________ fields that move at the speed of light.

Answer 1

Electromagnetic waves; magnetic; electrical

Question 2

Explosions of distant stars produce _____________ and produces images of the body

Answer 2

Gamma Rays

Question 3

Round in the middle and meets together at the top and the bottom. Rays meet at the focal point.

Answer 3

Convex mirror

Question 4

Thick at the top and bottom and thin in the middle. Rays spread out.

Answer 4

Concave mirror

Question 5

What are the three factors that affects the speed of a wave?

Answer 5

Compressibility, temperature, and the density.

Question 6

A reflection that is uneven.

Answer 6

Diffuse reflection

Question 7

An even reflection

Answer 7

Regular reflection

Question 8

What makes a rainbow?

Answer 8

The light is going at a fast rate, hitting the rain drops, making the light bend and go slower and when it exits the rain drop, the light spreads out into the colors of the rainbow.

Question 9

What causes a mirage?

Answer 9

A hot pavement and cooler air above it which causes light refraction because light travels faster in hot air

Question 10

A disturbance that involves the transfer of electric and magnetic energy.

Answer 10

A electromagnetic wave

Question 11

The energy that electromagnetic waves transfer through matter or space

Answer 11

Electromagnetic radiation

Question 12

The sun’s energy arrives on Earth as

Answer 12

Electromagnetic radiation

Question 13

The distance between the crest of one wave and the crest of the next wave

Answer 13

Wavelength

Question 14

The number of waves that pass a given point in a certain amount of time

Answer 14

Frequency

Question 15

All electromagnetic waves travel at the same speed In a __________but have different ___________ and different _____________.

Answer 15

Vacuum; wavelengths; frequencies

Question 16

A complete range of electromagnetic waves placed in order of increasing frequency is called the

Answer 16

Electromagnetic spectrum

Question 17

What is the electromagnetic spectrum made of in order?

Answer 17

Radio waves, microwaves, infrared rays, visible light, ultraviolet rays, x-rays, and gamma rays

Question 18

Electromagnetic waves with the longest wavelengths and the lowest frequencies

Answer 18

Radio waves

Question 19

Have shorter wavelengths and higher frequencies than radio waves do.

Answer 19

Microwaves

Question 20

An electromagnetic wave with wavelengths shorter than those of microwaves.

Answer 20

Infrared waves

Question 21

Electromagnetic waves that you can see

Answer 21

Visible light

Question 22

Electromagnetic waves with wavelengths just shorter than those of visible light.

Answer 22

Ultraviolet rays

Question 23

Electromagnetic waves with wavelengths just shorter than those of ultraviolet rays.

Answer 23

X-rays

Question 24

Electromagnetic waves with the shortest wavelengths and highest frequencies

Answer 24

Gamma rays

Question 25

Two ways in which a surface can reflect light

Answer 25

Regular reflection and diffuse reflection

Question 26

Occurs when parallel rays of light hit a smooth surface

Answer 26

Regular reflection

Question 27

A copy of the object formed by reflected or refracted rays of light.

Answer 27

Image

Question 28

Occurs in parallel rays of light hit an uneven surface

Answer 28

Diffuse reflection

Question 29

A flat sheet of glass that has a smooth, silver colored coating on one side

Answer 29

Plane mirror

Question 30

An image that forms where light seems to come from

Answer 30

Virtual image

Question 31

A ___________ produces a virtual image that is upright and the same size of the object

Answer 31

Plane mirror

Question 32

A mirror with a surface that curves inward like the inside of a bowl

Answer 32

Concave mirror

Question 33

An imaginary line that divides A mirror in half, much like the equator that divides Earth into Northern and Southern halves.

Answer 33

Optical axis

Question 34

The point at which rays parallel to the optical axis reflect and meet.

Answer 34

Focal point

Question 35

___________ can produce real or virtual images.

Answer 35

Concave mirrors

Question 36

Forms when light rays actually meet

Answer 36

Real image

Question 37

A mirror with a surface that curves outward.

Answer 37

Convex mirror

Question 38

A ___________ produces a virtual image that is always smaller than the object

Answer 38

Convex mirror

Question 39

When light hits an object, it can be ___________, ___________, and/or ___________.

Answer 39

Reflected; refracted; absorbed

Question 40

The ___________ of a medium is a measure of how much a light ray bends when it enters that medium.

Answer 40

Index of refraction

Question 41

A curved piece of glass or other transparent materials that refracts light.

Answer 41

Lens

Question 42

The type of image formed by a lens depends on the

Answer 42

Shape of the lens and the position of the object

Question 43

Carries signals for radio programs

Answer 43

Radio waves

Question 44

Power microwaves, cellphones, and radar

Answer 44

Microwaves

Question 45

Heat lamps gives off, most objects give this off.

Answer 45

Infrared waves

Question 46

An image that shows regions of different temperatures in different colors

Answer 46

Thermogram

Question 47

___________ That appears white is actually a mixture of different colors. A rainbow is made up of this.

Answer 47

Visible light

Question 48

Can damage or kill living cells, small doses are useful because they cause skin cells to produce vitamin D, which is needed for healthy bones and teeth.

Answer 48

Ultraviolet waves

Question 49

Uses are x-rays and can be used in industry and engineering.

Answer 49

X-rays

Question 50

Are used to examine the body's internal structures, radioactive substances and contain nuclear reactions

Answer 50

Gamma rays