Which statement best describes the refraction of light as it moves from air to glass?(1 point)
Responses
Although the light bends, its speed remains the same as before.
Although the light bends, its speed remains the same as before.
Although the light changes speed, it continues in the same direction as before.
Although the light changes speed, it continues in the same direction as before.
Light undergoes diffraction due to the difference in the speed of light in air and glass.
Light undergoes diffraction due to the difference in the speed of light in air and glass.
Light bends due to the difference in the speed of light in air and glass.
Although the light changes speed, it continues in the same direction as before.
What is one way that light waves differ from sound waves?(1 point)
Responses
Light waves travel by oscillation.
Light waves travel by oscillation.
Light waves transfer energy.
Light waves transfer energy.
Light waves all have the same frequency.
Light waves all have the same frequency.
Light waves do not require a medium to propagate.
Light waves do not require a medium to propagate.
How do the frequencies and the speeds of yellow light and blue light compare?(1 point)
Responses
The frequency of blue light is greater than that of yellow light, while the speeds of both colors of light are the same.
The frequency of blue light is greater than that of yellow light, while the speeds of both colors of light are the same.
The frequency of blue light is greater than that of yellow light, while the speed of yellow light is faster than that of blue light.
The frequency of blue light is greater than that of yellow light, while the speed of yellow light is faster than that of blue light.
The frequency of yellow light is greater than that of blue light, while the speed of blue light is faster than that of yellow light.
The frequency of yellow light is greater than that of blue light, while the speed of blue light is faster than that of yellow light.
The frequency of yellow light is greater than that of blue light, while the speeds of both colors of light are the same.
The frequency of blue light is greater than that of yellow light, while the speeds of both colors of light are the same.
A stationary source produces a sound wave at a frequency of 100 Hz. The wave travels at 1125 feet per second. A car is moving toward the sound source at a speed of 200 feet per second.
What is the wavelength of the stationary sound source and the wavelength that a person in the car perceives?
(1 point)
Responses
wavelength of the stationary source: 11.25 ft; perceived wavelength: 9.25 ft
wavelength of the stationary source: 11.25 ft; perceived wavelength: 9.25 ft
wavelength of the stationary source: 11.25 ft; perceived wavelength: 13.25 ft
wavelength of the stationary source: 11.25 ft; perceived wavelength: 13.25 ft
wavelength of the stationary source: 13.25 ft; perceived wavelength: 11.25 ft
wavelength of the stationary source: 13.25 ft; perceived wavelength: 11.25 ft
wavelength of the stationary source: 9.25 ft; perceived wavelength: 11.25 ft