false, mechanical
waves that require a medium through which to pass are called ELECTROMAGNETIC waves
true
in TRANSVERSE waves, the medium moes at right angles to the direction in which the wave is traveling
false, frequency
the unit associated with AMPLITUDE is the hertz
true
sound waves travel at DIFFERENT speeds in different mediums
true
REFRACTION is a bending that occurs when a wave moves from one medium to another
false, destructive
CONSTRUCTIVE interference occurs when amplitudes of two waves combine to produce a wave with a smaller amplitude
false, zero
nodes are points on a standing wave where the energy of the wave is MAXIMUM
true
the waves produced by earthquakes are know as SEISMIC waves
false, surface
tsunamis are huge ocean SECONDARY waves caused by underwater earthquakes
fales, ground
a seismograph records the AIR movement casused by seismic waves
wave
a disturbance that transfers evergy from place to place is called a
vibrate
waves are created when a source of energy causes a medium to
crests
the highest parts of a wave are called
longitudinal waves
waves that move the particles of the medium parallel to the direction that the waves are traveling are called
amplitude of the wave
the maximum distance that the particles of a medium move from the rest position is the
wavelength
the distance between two corresponding parts of a wave is the wave's
frequency
the speed of a wave is its wavelength multiplied by its
the air temperature
which of the following affects the speed of sound waves traveling through the air
refraction
the bending of waves due to a change in speed is called
diffraction
the bending of waves around the edge of a barrier is known as
interference
the interaction between two waves that meet is called
constructive interference
waves combine to make a wave with larger amplitude in a process called
standing wave
when an incoming wave combines with a reflected wave in such a way that the combined wave appears to be standing still, the result is a
resonance
what occurs when vibrations traveling through an object match the object's natural frequency
seismic waves
waves produced by earthquakes are called
in all directions
in which directions doe seismic waves travel from their point of origin
primary waves
longitudinal seismic waves are known as
liquids
secondary waves cannot travel through
P waves
which waves arrive at a seismograph first
locating pockets of valuable substances underground
what is another use of a seismograph aside from detecting earthquakes
antinodes
what are the highest and lowest points on a standing wave called
medium
the material through which a wave travels is called a
how they move
waves are classified according to
surface waves
waves in a pond or lake are
hertz
frequency is measured in units called
waves
scientists on the side of earth opposite to the epicenter of an earthquake mainly detect
surface waves
which type of waves caused by an earthquake does the most above-ground damage
tsunamis
an earthquake that occurs under water can cause huge surface waves on the ocean called
reflection
when a wave hits a surface through which it cannot pass and bounces back, it undergoes
destructive interference
waves combine to produce a smaller or zero-amplitude wave in a process called
vibrates
a mechanical wave is created when a medium __________, or moves back and forth or up and down
rarefactions
in a longitudinal wave moving along a spring, areas where the coils are farthest apart are called __________
surface
in __________ waves, each particle of the medium moves in a circle
amplitude
the __________ of a mechanical wave is a direct measure of its energy
amplitude
if a longitudinal wave has very crowded compressions and very uncrowded rarefactions, it has a large __________
faster
you hear thunder several seconds after you see lightening because light travels at a __________ speed than sound
wavelength
as the frequency of a wave traveling at constant speed increases, its __________ decreases
diffraction
__________ occurs when a wave goes around the edge of a barrier
incidence
the law of reflection states that the angle of __________ equals the angle of reflection
constructive
in __________ interference, the energy of the combined wave is greater than the energy of each of the two waves
troughs
when the crests of one wave align with the __________ of an identical wave, the amplitude of the resulting wave is zero
antinodes
the crests and troughs of a standing wave are called __________
resonance
__________ occurs when an object that is vibrating at its natural frequency absorbs energy from objects that vibrate at the same frequency
shadow
__________ zones are areas in which there are no seismic waves
stress
when the __________ in rock builds up enough, the rock breaks or changes shape, releasing energy in the form of waves
secondary
transverse seismic waves are known as __________ waves
primary
__________ waves are longitudinal seismic waves
seismograph
a __________ is an instrument used to detect and measure earthquakes
three
scientists can identify the location of an earthquake by comparing readings from at least __________ seismographs at different locations
medium
the material through which a wave travels is called a __________