Waves

Question 1

what type of wave is a sound wave

Answer 1

longitudinal

Question 2

How is height measured in a transverse wave

Answer 2

from middle to top or middle to bottom

Question 3

Does sound travel fastest in warm or cold air

Answer 3

warm air

Question 4

what does sound travel fastest in

Answer 4

solids, liquids, warm gas, cold gas

Question 5

Refraction occurs when a wave changes _____ as it passes through a different medium

Answer 5

speed

Question 6

Houses with carpet are much quieter than houses with tile or hardwood floors because the sound waves

Answer 6

are absorbed

Question 7

Increasing the amplitude of a sound wave will make it

Answer 7

get louder

Question 8

what does amplitude measure

Answer 8

energy

Question 9

when an ambulance with its siren on is moving AWAY from you, the wavelength gets ___ and the pitch of the sound gets ____

Answer 9

longer, lower

Question 10

In order for reflection to occur the wave must ___ an object

Answer 10

bounce off

Question 11

Light waves travell fastest in a ___

Answer 11

vaccum

Question 12

X-rays, UVwaves, and sound waves all have what in common

Answer 12

transmit energy

Question 13

If the angle of incidence shown is 30 degrees, the angle of reflection is___

Answer 13

30 degrees

Question 14

Refraction occurs when a wave changes its___

Answer 14

speed

Question 15

An echo is an example of a sound wave because of

Answer 15

relection

Question 16

the angle of incidence of a wave is always equal to the angle of____

Answer 16

reflection

Question 17

The po9int between vibrations in a standing wave is a

Answer 17

node

Question 18

What is interference

Answer 18

when 2 or more waves overlap and combine to form a new wave

Question 19

the amount of time it takes 1 wavelength to pass a point

Answer 19

period

Question 20

what does T mean

Answer 20

period

Question 21

what is frequency

Answer 21

the number of waves that pass by a certain point in 1 second

Question 22

frequency and wavelength have what type of relationship

Answer 22

inverse

Question 23

what is Sound an example of and why

Answer 23

mechanical wave and longitudinal
because mechanical waves have to travel through a medium

Question 24

what is electromagnetic and why

Answer 24

light waves/transverse waves.
becuase it does not need a medium to travel through
like you can see light in space but you can not hear sounds in space.

Question 25

A measure of how long the waves is, taken from one wave to the same point on the next wave.

Answer 25

wavelength

Question 26

what is loudness?

Answer 26

the human perception of intensity

Question 27

A term related to frequency that increases as frequency increases

Answer 27

pitch

Question 28

what is refraciton

Answer 28

the bending of waves causes by a change in their speed as they move from one medium to another Ex- like fish in water when it is distorted

Question 29

when an object causes a wave to change direction and bend around it

Answer 29

diffraction

Question 30

What are tuning forks an example of? Explain

Answer 30

Resonance. process where an object is made to vibrate at it's NATURAL FREQUENCY

Question 31

In what way does matter move in a longitudinal wave

Answer 31

paralell

Question 32

In what way does matter move in a transverse wave

Answer 32

perpendicular

Question 33

Order the electromagnetic spectrum Longest wavelength/smallest frequency- Smallest wavelength/highest frequency

Answer 33

Radio Waves, Microwave, infrared, visible light, ultraviolet, x-ray, gamma ray

Question 34

electromagnetic waves can behave as waves and ____; called photons

Answer 34

particles

Question 35

what do radio waves do?

Answer 35

MRI's, WIFI, RADAR, cell phones

Question 36

what do microwaves do?

Answer 36

Cooking, doppler radar and Gps

Question 37

What is used in night vision goggles and remotes

Answer 37

infrared

Question 38

what is visible light?

Answer 38

the only EM waves we can see. ROYGBIV

Question 39

What is used to kill bacteria and what else can it do?

Answer 39

ultraviolet(UV) waves. it can also be used in lightbulbs and is used in the human body to make vitiman D

Question 40

what is bad for humans if we use too much of it

Answer 40

UV

Question 41

what do X-rays do?

Answer 41

Take pictures of bones. small enough to penetrate skin. Overexposed can cause cancer

Question 42

Gamma Rays. Explain

Answer 42

used to kill cancer cells, sterilize materials, and radioactive tracers, make big bombs and kill all kinds of cells

Question 43

what is the doppler effect?

Answer 43

Change in frequency and pitch due to a moving wave source.

Question 44

what are rods?

Answer 44

like night vision, used in low levels of light

Question 45

what are cones?

Answer 45

used to see in the day time. bright light levels. used to see colors

Question 46

Concave lenses?

Answer 46

nearsighted (to help you see closer)

Question 47

Convex lenses?

Answer 47

Farsighted ( to help you see far away)

Question 48

mechanical waves___

Answer 48

disturb matter

Question 49

what is UV produced by?

Answer 49

stars and galaxies