science quiz

Question 1

Sound Waves

Answer 1

longitudinal waves that can only travel through matter

Question 2

Sound we hear is produced by what

Answer 2

sound waves

Question 3

vibration

Answer 3

a rapid back and forth motion that can occur in solids liquids or gases

Question 4

sound waves can not travel through _____ because there is no _____ to carry the energy

Answer 4

empty space, medium

Question 5

compression

Answer 5

a region of longitudinal wave where the particles in the medium are closest together

Question 6

particles in a wave travel more slowly in

Answer 6

gas

Question 7

in a stiff or rigid solid where particles are packed very close together what do the particles do

Answer 7

the particles collide and transfer energy very quickly

Question 8

sound waves travel faster in what water than in what water

Answer 8

seawater than in freshwater

Question 9

rarefraction

Answer 9

a region of a longitudinal wave where the particles are farthest apart

Question 10

how to get hearing loss

Answer 10

The eardrum vibrates as pressure changes in the ear, Listening to loud music over time can also damage your ears, infection or loud sounds can damage tiny hair cells in the cochlea

Question 11

how does hearing become less sensitive

Answer 11

cells that are damaged or die do not grow back

Question 12

amplitude

Answer 12

the maximum distance the particles in a medium move from their rest position as the wave passes through the medium

Question 13

as the energy of the sound increases so does the what

Answer 13

amplitude (the distance the particles of air vibrate back and forth)

Question 14

amplitude, intensity, and loudness

Answer 14

a wave with a greater amplitude will produce a louder sound

Question 15

intensity

Answer 15

the amount of sound energy that passes through a square meter of space in one second

Question 16

wavelength

Answer 16

the distance between a point on wave and the nearest point just like it

Question 17

the property of sound waves is what

Answer 17

wavelength

Question 18

frequency

Answer 18

frequency of a sound is the number of wavelengths that pass by a point each second

Question 19

pitch

Answer 19

the perception of how high or low a sound seems

Question 20

a higher frequency produces a higher what

Answer 20

pitch

Question 21

a human ear can detect sounds with frequencies between what and what

Answer 21

20 Hz and 20,000 Hz

Question 22

doppler effect

Answer 22

the change of pitch when a sound source is moving in relation to an observer

Question 23

interference

Answer 23

occurs when waves that overlap combine, forming a new wave

Question 24

resonance

Answer 24

an increase in amplitude that occurs when an object vibrating at its natural frequency absorbs energy from a nearby object vibrating at the same frequency

Question 25

Absorption

Answer 25

The transfer of energy by a wave to the medium through which it travels.
How well a material absorbs the energy of a sound wave depends on various factors, such as the inner structure or the amount of air in it.

Question 26

Reflection

Answer 26

The bouncing of a wave off a surface.

Question 27

The angle at which a sound wave strikes a surface is always equal to what

Answer 27

the angle at which the sound wave is reflected off the surface.

Question 28

Echo

Answer 28

A reflected sound wave.

Question 29

You will only hear an echo if the reflected sound returns more blank seconds later

Answer 29

0.1 seconds later.

Question 30

Reverberation

Answer 30

The collection of reflected sounds from the surfaces in a closed space.

Question 31

Sound waves that reach the listener directly are heard sooner than what

Answer 31

reflected sound waves

Question 32

Acoustics

Answer 32

The study of how sound interacts with structures.

Question 33

what reduces the reverberation in a room.

Answer 33

Soft materials

Question 34

Ultrasound

Answer 34

Waves of ultrasound have a higher frequency than humans can hear.

Question 35

Echolocation

Answer 35

The process an animal uses to locate an object by means of reflected sounds.

Question 36

Dolphins might use an echo to determine an object’s what

Answer 36

distance, shape, and speed.

Question 37

Sonar

Answer 37

A system that uses the reflection of sound waves to find underwater objects.

Question 38

medium

Answer 38

material in which a wave travels

Question 39

which property of sound waves determine how close together the particles are in the compression region

Answer 39

amplitude