Waves cK-12

________ occurs when waves spread out and travel around obstacles or through openings in obstacles

diffraction

a longitudinal wave is a combination of a transverse and a surface wave

false

a wave with a higher frequency has a longer wavelength

false

an ocean wave carries water all the way across the ocean to the opposite shore

false

for waves of the same amplitude, a higher frequency wave has less energy than a lower frequency wave

false

for waves of the same amplitude, shorter wavelength waves have less energy than longer wavelength waves

false

in a longitudinal wave, particles of the medium vibrate in a direction that is perpendicular to the direction the wave travels

false

in all mechanical waves, particles of the medium move up and down when the wave passes through them

false

mechanical waves can travel through liquids and gases but not through solids

false

only sound waves can be reflected

false

particles of the medium actually travel along with a mechanical wave

false

examples of transverse waves include the wave that travels through a

guitar string when you pluck it, spring toy when you shake it from side to side, and a bungee cord when you shake it up and down

light always travels at the same speed, but it can have different frequencies and wavelengths, if the frequency of light decreases, the wavelength

increases

the SI unit for speed is

m/s

a ________ wave is a disturbance in matter that transfers energy through the matter

mechanical

a wave that travels through matter is called a(n) ________ wave

mechanical

a(n) ________ wave is a disturbance in matter that transfers energy through matter

mechanical

all waves that travel through matter are called

mechanical waves

the matter a wave travels through is called the _______ of the wave

medium

the matter through which the type of mechanical wave travels is called the

medium

wave interactions occur when waves pass from one type of material to another, these different materials are known as the ________ of the wave

medium

_____ are the places in a longitudinal wave where particles of the matter are farther apart

rarefactions

________ is the bouncing back of waves from a surface that they cannot pass through

reflection

an echo is an example of the type of wave interaction called

reflection

types of wave interaction include

reflection, refraction, and diffraction

_______ occurs because the waves start traveling at a different speed in the new medium

refraction

________ is the bending of waves when they enter a new medium at an angle

refraction

in a transverse wave, amplitude is the difference in height between the crest and

resting position

the position of a particle of matter in the absence of a wave is called the

resting position

the SI unit hertz equals one wave passing a fixed points in one

second

wave ________ is the distance a wave travels in a given amount of time

speed

speed can be calculated with the equation

speed = distance/time

a higher frequency wave has more energy than a lower frequency wave with the same amplitude

true

a mechanical wave is a wave that travels through matter

true

a wave with greater energy has a larger amplitude

true

earthquake waves travel in all directions away from the disturbance that causes the earthquake

true

earthquakes cause longitudinal waves called p waves

true

refraction occurs because waves change speed in a new medium

true

s waves travel through underground rocks

true

the frequency of a wave is the same as the frequency of vibrations that caused the wave

true

the larger a surface wave is, the more energy the wave has

true

the matter a mechanical wave travels through is called the medium

true

the medium of a mechanical wave is the matter through which it travels

true

the more energy a wave has, the farther the particles of matter move

true

the speed of most waves depends on the medium

true

the wavelength of visible light determines color

true

wave amplitude is the maximum distance the particles of the medium move from their resting positions when a wave passes through

true

in a longitudinal wave, wavelength can be measured as the distance between

two adjacent compressions

in a transverse wave, wavelength can be measured as the distance between

two adjacent crests

assume that 10 waves pass a fixed point in 5 seconds, what is the frequency of the waves in hertz

2 Hz

a mechanical wave starts when matter is disturbed by a source of

energy

What is the SI unit for frequency

hertz (Hz)

a surface wave is a combination of a transverse wave and a(n) ________ wave

longitudinal

which of the following are types of mechanical waves

surface waves, transverse waves, and longitudinal waves

which color of visible light has the most energy

violet

write the equation that shows the relationship between wave speed, wavelength, and wave frequency

wave speed = wavelength x wave frequency

______ describes the length of one complete wave cycle

wavelength

______ is the distance between two corresponding points of adjacent waves

wavelength

_______ is the distance between two corresponding points on adjacent waves, usually measured in meters

wavelength

if 20 waves pass a fixed point in 10 seconds, the frequency of the waves is

2 Hz

if an ocean wave has a frequency of 2 waves/s and a speed of 4 m/s, what is its wavelength

2 m

if an ocean wave has a wavelength of 2 m and a frequency of 1 wave/s, then its speed is

2 m/s

what is the speed of a wave that has a wavelength of 2 m and a frequency of 1.5 Hz

3 m/s

in a longitudinal wave, the places where particles of matter are closer together are called

compressions

the high points of a transverse wave are called

crests

the wavelength of a transverse wave can be measured as the distance between two adjacent

crests

a transverse wave is characterized by the high and low points, the high points are called ________, and the low points are called ________

crests and troughs

the matter a wave travels through is called the material of the wave

false

waves generally travel fastest through gases and slowest through solids

false

wave ________ is the number of waves that pass a fixed point in a given amount of time

frequency

near the shore where the water is shallow, waves start to drag on the bottom, this creates ________ that slows down the bottoms of the waves, whiles the tops of the waves keep moving at the same ________

friction and speed

wave interferences refers to wave interactions that can occur between a wave and

its medium and other waves

a _________ wave is a mechanical wave in which particles of the medium vibrate in a direction that is parallel to the direction that the wave travels

longitudinal

a ________ wave is a wave that travels along the surface of a medium

surface

in which type of wave do particles of the medium move in small circles

surface wave

types of mechanical waves include

surface waves, transverse waves, and longitudinal waves

wave diffraction depends on

the size of the opening and the size of the wavelength

why do surface waves break along the shore

the waves start to drag on the bottom

what happens if waves strike a reflective surface at an angle other than 90 degrees

they are reflected back at the same angle but different direction

a wave in which particles of matter vibrate at right angles to the direction the wave travels is called a(n) ________ wave

transverse

in a ________ wave, particles of the medium move perpendicular to the direction of the wave

transverse

a ________ is a wave in which particles of the medium vibrate perpendicular to the direction that the wave travels

transverse wave

if you shake one end of a rope up and down, a wave passes through the rope, which type of wave is it

transverse wave

the low points of a transverse wave are called

troughs

Wavelength is usually measured in meters

true

a longitudinal wave is a type of mechanical wave

true

a surface wave is one type of mechanical wave

true

in deep water, how do particles of water move when a surface wave passes through them

up and down, back and forth, in an overall circular motion

sound energy travels through matter in waves, do sound waves travel faster through air or water

water

what is the frequency of a wave that is traveling at a speed of 3 m/s and has a wavelength of 1.2 m

2.5 Hz

the ________ is the matter through which a surface wave travels

medium

_______ waves are longitudinal waves caused by an earthquake

p

which color of visible light has the longest wavelength

red

transverse waves called ________ waves occur during earthquakes

s

an ocean wave is an example of a surface wave

true

what is the amplitude of a transverse modeled wave in the following figure if the height of a crest is 3 cm above the resting position of the medium

3 cm

in a surface wave, particles of the medium move up and down as well as back and forth, giving them an overall ________ motion

circular

in a longitudinal wave, amplitude can be measured from the distance between the high pressure areas of the wave called

compressions