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17 questions
A bat emits a series of short, high-pitched sounds that bounce off an object to give the bat a sense of what is in its path. Which of the following best describes the principle being used?
Reflection
Refraction
Resonance
Ultrasound
Students used rope to model radio waves and microwaves. Compared to the model of radio waves, the model of microwaves has a greater—
Period
Amplitude
Frequency
Wavelength
A student uses a springy metal coil to model a wave, as shown below. Which type of wave is most like the student's model?
Transverse wave
Longitudinal wave
Standing wave
Diffraction wave
Based on the information above what type of wave has a wavelength of 1.00 x 10-10 m?
Radio
Infrared
X-ray
Gamma Radiation
The pitch of a sound wave is determined by the ___________ of the sound wave.
Amplitude
Energy
Speed
Frequency
The Doppler Effect is an apparent change in the wavelength, but the wave emitted by the source is actually constant. As a train approaches and blows its horn, the apparent decrease in the wavelength will make the horn sound—
Higher in pitch
Lower in pitch
Louder
Softer
Which of the following has the shortest wavelength?
A dog growling at a frequency of 85 Hz
A cello played at a frequency of 150 Hz
A male teacher speaking at a frequency of 520 Hz
A female American Idol contestant singing at a frequency of 2,100 Hz
What process explains what happens when a wave crosses from one medium to another and slows down and changes direction, such as when it moves from glass to water?
Refraction
Resonance
Friction
Reflection
A veterinarian installs a programmable microchip under the skin of a new pet that, when scanned, gives off a signal that indicates the name of the owner and the vaccinations the pet has been given. What type of wave would be the safest and most effective for this microchip to use?
Microwaves
Radio waves
Light waves
Infrared waves
Two students are modeling waves using a length of rope between them, as shown below. Based on the information above, what will most likely occur when the two waves interact?
The blinds are closed in a room during the daytime and all of the lights are off. Which of the following best explains why the room may still not be completely dark and you can still see all around the room?
Light reflects off of the windows.
Light bends around the blinds.
Light is absorbed by the blinds.
Light changes direction when entering through the window.
The diagram below illustrates a beam of light passing from air into glass.
How would the beam of light be affected by refraction caused by the glass?
If a mechanical wave has a frequency of 0.147 Hz and a wavelength of 12.05 m, what is the velocity of the wave?
Record your answer.
As ocean waves approach coastlines with shallower water, the waves slow down because of the force exerted on them by the seabed. Waves coming into the shore at an angle will change direction because the part of the wave nearest the shore is in shallower water than the rest of the wave.
Which of the following processes best describes the behavior of the waves?
Reflection
Refraction
Diffraction
Interference
A group of students placed small objects in a ripple tank and observed the path of the water waves as they approached the obstacles. They observed the waves bending around the objects. This phenomenon can be observed in a harbor as waves bend around small boats. In order for this to occur, the wavelength of the waves must be larger than the objects they encounter.
This process is best described as —
Reflection
Refraction
Diffraction
Interference
Waves superimpose on one another when two or more waves arrive at the same point and occupy the same space. Which of the following processes best describes this behavior?
Reflection
Refraction
Diffraction
Interference
A wave is traveling at 4.00 m/s and has a wavelength of 2.20 m. What is the frequency of the wave?
8.20 Hz
8.8 Hz
0.55 Hz
1.82 Hz
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