Science 101 test 3
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interference is a property of light most easily explained by the particle model. T or F.
false
a noise level of 65 decibels is measured for..
normal conversation
total internal reflection...
occurs when light strikes an interface at a greater than critical angle, accounts for the brilliance of cut diamonds, allows light to travel in a curved path inside an optic fiber.
a decibel noise level of 40 would be most likely found..
on a typical day in the library
the colors of the visible spectrum can be measured in units of...
wavelength, frequency, and energy
***wavelength is the distance of one bottom curve to the end of the top curve
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sound from the siren of an emergency vehicle has a frequency of 872.9 Hz and moves with a velocity of 343.1 m/s. what is the distance from one condensation to the next?
0.3931 m
sound from the siren of an emergency vehicle has a frequency of 703.0 Hz and moves with a velocity of 337.7 m/s. what is the distance from one condensation to the next?
0.4802 m
what is the energy of a gamma photon of frequency 1.53 x 10^20 Hz?
1.01 x 10^-13 J
to the nearest hundreth of a second, how much time is required for reflected sunlight to travel from the moon to earth if the distance between the earth and the moon is 3.91 x 10^5 km
1.30 s
water waves are observed to move under a bridge at a rate of one complete wave every 4.0 s. what is the frequency of these waves?
1/4 Hz
a sound that is perceived as twice as loud requires...
10 times the intensity
what is the speed of light when traveling through water... and ice...
2.26 x 10^8 m/s 2.29 x 10^8 m/s
a tuning fork vibrates 474.0 times a second, producing sound waves with a wavelength 72.0 cm. what is the velocity of the these waves?
34100 cm/s
the slower light travels in a given medium, the greater the index of refraction. T or F.
True
the wavelength of a sound wave is not related to its
amplitude
sound waves in air...
are longitudinal, are produced by something vibrating, and undergo refraction when they pass through warm and cold air.
today, light is understood to be adequately explained...
as having both wave and particle behavior
to an astronaut in orbit around the earth the sky appears...
black
light of which of the following colors has the highest frequency? blue yellow red green
blue
the swedish flag is blue and yellow. when viewed with blue light it appears...
blue and black
nearsightedness, or myopia, can be corrected with what type of lens?
concave
when the trough of some wave arrives at the same time and place as the crest of otherwise identical waves,...
destructive interference occurs.
the bending of waves around the edge of an obstacle in their path is an example of...
diffraction
you are able to see non-luminous objects because light has undergone...
diffuse reflection
when waves go from one place to another, they carry..
engery
the angle of incidence is equal to the angle of refraction. T or F.
false
the sky appears blue due to the light reflected from the oceans. T or F.
false
when you are moving toward a stationary source of a sound, its frequency will appear lower than it actually is. T or F.
false
ultrasound refers to sound whose...
frequency is too high for most people to hear.
a stationary source emits a sound at a constant frequency. if you run toward the source the frequency you hear will be..
higher.
a rainbow always appears...
in the part of the sky opposite from the sun
the greater the decibel (dB) level of a sound wave, the...
louder it is.
polarized light vibrates...
only in one plane
in a transverse wave, the individual particles of the medium move...
perpendicular to the direction of travel
a luminous object is an object that...
produces light
a sound wave that moves through the air is...
pulses of increased and decreased air pressure.
light of which of the following colors has the longest wavelength? blue yellow green red
red
a one-way mirror works because it...
reflects and transmits light at the same time
a pencil is placed in a glass of water. the pencil appears to be bent. this is an example of...
refraction
a pure musical note causes a thin wooden panel nearby to vibrate with the same frequency. This is an example of...
resonance.
the setting sun appears red because its light is...
scattered
transverse mechanical waves can pass through...
solids
of the following kinds of waves, the ones that cannot travel through a vacuum are...
sound waves
through which medium will sound travel most rapidly? vacuum steel air water
steel
how many seconds will elapse between seeing lightning and hearing the thunder if the lightning strikes 3 miles (15,840 ft) away and sound travels at 1,151 ft/s?
t= 13.76 s
the higher the frequency of a sound wave...
the higher the pitch
the higher the frequency of wave...
the shorter its wavelength
in longitudinal waves, the medium...
vibrates in the same direction the wave is moving