Waves

Question 1

Wave

Answer 1

A disturbance that carries energy through matter and space

Question 2

What needs to be done in order to create waves?

Answer 2

Must be a change made by adding energy to a system

• the bigger the disturbance (energy) the bigger the wave
• the farther the wave travels, the less intense

Question 3

How do waves transfer energy?

Answer 3

Through a media, vibrates particles and transfers energy

Question 4

Medium

Answer 4

Matter a wave travels through

Question 5

Mechanical Waves

Answer 5

Waves that require a medium

Question 6

Electromagnetic Waves

Answer 6

Waves that don’t require a medium/ A wave that can travel through empty space

Question 7

Transverse Waves

Answer 7

A wave that causes particles of a medium to vibrate up & down, in the direction of the wave

Question 8

Wave Length

Answer 8

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

• The longer the wave length, lower energy, levels are less dangerous
• the shorter the wave length, higher energy, levels are more dangerous

Question 9

Amplitude

Answer 9

The height of a crest

• Low amplitude, lower energy, less dangerous
• High amplitude, higher energy, more dangerous

Question 10

Longitudinal Waves

Answer 10

A wave that causes the particles of a medium to vibrate back & forth in the direction of the wave

Question 11

Compression

Answer 11

Point on the wave where the particles are closer together

Question 12

Rarefaction

Answer 12

Point on the wave where the particles are spread apart

Question 13

What would compression be equal to on a wave?

Answer 13

The crest

Question 14

What would the rarefaction be equal to on a wave?

Answer 14

The trough

Question 15

What are the properties of waves?

Answer 15

Wave length and Frequency

Question 16

Loudness

Answer 16

The human perception of intensity

Question 17

Pitch

Answer 17

A term related to the frequency and increases as frequency increases

Question 18

Doppler Effect

Answer 18

The motion between an observer and a moving object creates a change in frequency

Question 19

Frequency

Answer 19

Number of waves per second

Question 20

Constructive Interference

Answer 20

When 2 waves completely overlap producing a wave with a larger amplitude

Question 21

Destructive Interference

Answer 21

When 2 waves do not overlap producing a wave with a smaller amplitude

Question 22

Resonance

Answer 22

The vibrating back and forth of a wave

Question 23

Do loud sounds travel faster than soft sounds?

Answer 23

No, the only difference is the intensity

Question 24

Would sound travel in an oven or a freezer?

Answer 24

In an oven because the particles are moving faster

Question 25

Does the pitch of a sound affect its speed?

Answer 25

No, only the frequency changes

Question 26

Which doesn't belong with the rest of the terms?: | Loudness, Pitch, Amplitude and Volume

Answer 26

Loudness is volume. You change volume by changing amplitude. | Pitch is related to frequency

Question 27

Would sound travel faster in a solid, liquid or gas?

Answer 27

Solid, particles are more compact/ closer together which means easy to transfer

Question 28

Which wave would travel the fastest in a vacuum, light or sound?

Answer 28

Light, doesn't require a medium

Question 29

Radiation

Answer 29

The transfer of energy by electromagnetic waves

Question 30

Infrared radiation has a wavelength slightly longer than ____________.

Answer 30

Microwaves

Question 31

____________ radiation has a higher frequency than visible light

Answer 31

Ultraviolet

Question 32

Objects containing heat can emit ____________.

Answer 32

Infrared radiation

Question 33

______________ have the lowest energy

Answer 33

Radio waves

Question 34

Radio waves are radiation with very long _______________ and low frequencies.

Answer 34

Wave lengths

Question 35

____________ have the highest frequency of all electromagnetic waves.

Answer 35

Gamma rays

Question 36

Ozone in Earth's atmosphere blocks most of the sun's____________.

Answer 36

Infrared rays

Question 37

____________ are radio waves with the highest frequency and energy

Answer 37

Microwaves

Question 38

True or false: Gamma rays travel faster than visible light

Answer 38

False, same speed as light but frequency changes