Waves/sound/light

Question 1

Doppler Effect

Answer 1

Caused by the change in motion between the source and the observer

Question 2

Doppler Effect- moving towards you

Answer 2

The wavelengths are shorter; frequency is higher/pitch

Question 3

Doppler Effect- moving away from you

Answer 3

Waves are farther apart; lower frequency/pitch

Question 4

Sonic Boom

Answer 4

Object travels through air faster than the speed of sound; creates a shock wave of large amounts of energy

Question 5

Sonic Boom - Shock Wave

Answer 5

Waves pile up to form a shockwave; sound barrier is broken (faster than the speed of sound)

Question 6

Echolocation

Answer 6

Uses reflected ultrasonic waves to hunt and navigate. The waves bounce off of objects and return to the source for it to determine the proximity, size, or speed of the object.

Question 7

Examples of Echolocation

Answer 7

Bats, dolphins

Question 8

SONAR

Answer 8

Sound Navigation and Ranging; submarines, finding fish, mapping oceans “manmade echolocation”

Question 9

Pitch

Answer 9

Description of how high or low the sound seems to the listener

Question 10

Ultrasound

Answer 10

Sounds with frequencies above the normal human hearing range

Question 11

Infrasound

Answer 11

Sounds with frequencies below the normal human hearing range

Question 12

What are sound levels measured in?

Answer 12

Decibels (dB)

Question 13

7 types of electromagnetic waves

Answer 13

radio, microwave, infrared, visible light, ultraviolet, x-ray, gamma rays

Question 14

Radio Waves

Answer 14

Lowest frequency, the longest wavelength

Question 15

Microwaves

Answer 15

Ex: cell phones, microwaves, RADAR for speed/location, satellites in space

Question 16

Infrared

Answer 16

Releases heat
Ex: thermogram, night vision

Question 17

Visible Light

Answer 17

ROY G BIV
Red = longest wavelength
Violet = shortest wavelength

Question 18

Ultraviolet (UV)

Answer 18

Too much can cause skin cancer, wrinkles, and eye damage
Ex: kill bacteria, sterilize MD tools, produce vitamin D, cure jaundice
Insects use this to find flowers

Question 19

X-rays

Answer 19

Too much can kill living cells; use lead to block the waves
Ex: looking at bones, airport security, engineering design

Question 20

Gamma Rays

Answer 20

Shortest wavelength/ highest frequency
Ex: Destroy cancer cells and healthy cells

Question 21

How are different types of radiation arranged along the EM spectrum

Answer 21

By the amount energy they carry

Question 22

What is the difference between a wave and a particle

Answer 22

A particle is a discrete unit of energy; a wave is a continuous flow of energy

Question 23

Astronomers often scan the sky using devices called radio telescopes. What can you conclude about these devices

Answer 23

They pick up the radio waves emitted by stars

Question 24

What do all forms of EM radiation have in common

Answer 24

Their speed

Question 25

What produces electromagnetic radiation?

Answer 25

Electrons changing energy levels

Question 26

Helps you change the channels on your TV

Answer 26

Infrared

Question 27

Found in space and nuclear explosions

Answer 27

Gamma rays

Question 28

Used to see your bones

Answer 28

X-rays

Question 29

Used to pop popcorn

Answer 29

Microwaves

Question 30

When they move from one energy level to the next, they emit electromagnetic radiation

Answer 30

Electrons

Question 31

Sometimes it behaves like a wave, sometimes like particles

Answer 31

Radiation

Question 32

Used to transmit radio and television signals as well as cell phone signals

Answer 32

Radio waves

Question 33

Contains the colors of the rainbow

Answer 33

Visible light

Question 34

Occurs naturally in sunlight; most of it is blocked by the ozone layer

Answer 34

Ultraviolet

Question 35

Relationship between wavelength and energy

Answer 35

If the wave gets bigger, there is less energy. As the wavelength gets smaller, more energy is involved

Question 36

Waves that are about the size of atoms

Answer 36

X- rays

Question 37

Waves that have the most light energy

Answer 37

Gamma rays

Question 38

Waves that, in large doses, can cause skin cancer and cataracts

Answer 38

Ultraviolet light

Question 39

Waves that are usually experienced as heat

Answer 39

Infrared waves

Question 40

Waves that are about the size of a virus

Answer 40

Ultraviolet light

Question 41

Waves that are a little shorter than bacteria

Answer 41

Visible light

Question 42

Waves that are very long and do not have much light energy

Answer 42

Radio waves

Question 43

Waves that are used by cellular phones

Answer 43

Microwaves

Question 44

Waves used in radar

Answer 44

Microwaves

Question 45

Waves that are given off by the human body

Answer 45

Infrared waves

Question 46

Waves that are as long as or longer than a football field

Answer 46

Radio wvaes

Question 47

Waves that carry television signals

Answer 47

Radio waves

Question 48

Waves that are given off by a light bulb

Answer 48

Visible light

Question 49

Wave that are used in television remote controls

Answer 49

Infrared waves

Question 50

Waves that are produced in nuclear explosions

Answer 50

Gamma rays

Question 51

Waves that are used to heat food

Answer 51

Microwaves

Question 52

Waves that include the r waves that our eyes see as different colors

Answer 52

Visible light

Question 53

Waves that are used to make pictures of bones

Answer 53

X- rays

Question 54

Waves whose source includes black holes, neutron stars, and pulsars

Answer 54

Gamma rays

Question 55

Waves that are mostly blocked from Earth by the ozone layer

Answer 55

Ultraviolet