Light

How is visible light different from radio waves?
1. visible light travels at a slower speed than radio waves
2. radio waves travel at a slower speed than visible light
3. radio waves have longer wavelengths than visible light
4. visible light is less energetic than radio waves
Which form of electromagnetic radiation below DOES NOT penetrate very far through our atmosphere?
1. X-rays
2. Radio waves
3. Visible Light
4. Infrared
What color is found between red and yellow in the visible spectrum?
1. orange
2. green
3. blue
4. indigo
What color is found between blue and yellow in the visible spectrum?
1. orange
2. green
3. red
4. indigo
What color is found between blue and violet in the visible spectrum?
1. orange
2. green
3. yellow
4. indigo
What color is found between green and indigo in the visible spectrum?
1. orange
2. green
3. blue
4. red
Electromagnetic radiation is usually described as traveling as a wave. Which visible color has the longest wavelength?
1. red
2. yellow
3. violet
4. green
Electromagnetic radiation is usually described as traveling as a wave. Which visible color has the shortest wavelength?
1. red
2. yellow
3. violet
4. green
What type of electromagnetic radiation has just slightly too long a wavelength to be visible?
1. infrared
2. gamma ray
3. radio
4. ultraviolet
What type of electromagnetic radiation has just slightly too short a wavelength to be visible?
1. infrared
2. gamma ray
3. radio
4. ultraviolet
Which of the following consists of electromagnetic waves with the shortest wavelength?
1. a beam of red light
2. a radio broadcast of last Saturday's football game
3. a beam of blue light
4. the x-rays in your dentist's office
Which of the following consists of electromagnetic waves with the longest wavelength?
1. a beam of red light
2. a radio broadcast of last Saturday's football game
3. a beam of blue light
4. the x-rays in your dentist's office
Where would be the best place to locate a telescope for observing gamma rays from celestial objects?
1. near the ocean
2. on a mountain top in the desert
3. near a hospital
4. on a space station
These spectral lines appear as dark lines in an otherwise continuous spectrum. Stars show these lines when seen through a spectroscope.
1. absorption
2. emission
3. doppler
4. continuous
Most of the radiation from space is blocked by this. It also limits earth-based telescopes' resolution.
1. atmosphere
2. skylab
3. oceans
4. empty space
The compression or shortening of waves due to the Doppler effect when an object is moving toward the observer.
1. blueshift
2. redshift
This effect - a shift in wavelength - can be used to determine how an object is moving.
1. Doppler
2. Bohr
3. Newton
4. Omega
This kind of radiation includes gamma rays, x-rays, ultraviolet, visible light, infrared, and radio waves.
1. electromagnetic
2. beta
3. alpha
4. visible
These spectral lines appear as bands or lines of bright colors when a hot glowing gas is seen through a spectroscope.
1. emission
2. absorption
3. doppler
4. continuous
Blue-jean blue.
1. indigo
2. cyan
3. magenta
4. yellow
Radiation that is just a bit too long to be visible.
1. infrared
2. ultraviolet
3. radio
4. x-rays
The lengthening of waves due to the Doppler effect when an object is moving away from the observer.
1. redshift
2. blueshift
3. violetshift
4. indigoshift
The colors of the visible spectrum.
1. ROYGBIV
2. COSDEMP
3. MVEMJSUNP
4. OBAFGKM
The range of electromagnetic radiation from gamma-rays through radio waves.
1. spectrum
2. prism
3. wavelength
4. magnification
Radiation that has a wavelength that is just a little too short to be visible.
1. infrared
2. ultraviolet
3. x-rays
4. radio
The distance between one crest of a wave to the next.
1. wavelength
2. amplitude
3. frequency
4. period
With a spectroscope you can see an emission spectrum when you look at a tube of hot glowing gas. What does an emission spectrum look like?
1. continuous colors of the rainbow
2. dark lines in a background of continuous colors
3. certain bright colored lines
4. a single bright sphere of color
With a spectroscope you can see an absorption spectrum when you look at a cool gas with a light source behind it. What does an absorption spectrum look like?
1. continuous colors of the rainbow
2. dark lines in a background of continuous colors
3. certain bright colored lines
4. a single bright sphere of color
With a spectroscope you can see an continuous spectrum when you look at a hot, solid, glowing object. What does an continuous spectrum look like?
1. continuous colors of the rainbow
2. dark lines in a background of continuous colors
3. certain bright colored lines
4. a single bright sphere of color
You are using a spectroscope to look at a hot, glowing, solid object. Between you and the hot object is a tube with some cool gas in it. What type of spectrum will you see?
1. a continuous spectrum
2. a flash spectrum
3. an absorption spectrum
4. an emission spectrum
You are using a spectroscope to look at a hot, glowing, solid object. What type of spectrum will you see?
1. a continuous spectrum
2. a flash spectrum
3. an absorption spectrum
4. an emission spectrum
You are using a spectroscope to look at a hot, glowing gas. What type of spectrum will you see?
1. a continuous spectrum
2. a flash spectrum
3. an absorption spectrum
4. an emission spectrum
Which of these is an emission spectrum?
1. Moe
2. Larry
3. Curley
Which of these is an absorption spectrum?
1. Moe
2. Larry
3. Curley
Which of these is an continuous spectrum?
1. Moe
2. Larry
3. Curley
A bushed-looking astronomy student walks into class mumbling, "Roy G Biv". What is she trying to remember?
1. the colors of the visible spectrum from longest wavelangth to shortest wavelength
2. the colors of the visible spectrum from shortest wavelangth to longest wavelength
3. the temperatures of the nearest stars
4. the seven brightest stars in our night sky
Color depends on what characteristic of light?
1. wavelength
2. amplitude
3. brightness
4. mood
An excited atom decays to its ground state and emits a photon of green light. If instead the atom decays to some intermediate state, then the light emitted could be which of the following?
1. violet
2. blue
3. red
An excited atom decays to some intermediate state and emits a photon of yellow light. If instead the atom decays all the way to the ground state, then the light emitted could be which of the following?
1. blue
2. orange
3. red
A hypothetical atom has four distinct energy states. Assuming all transitions are possible, how many spectral lines can this atom produce?
1. six (4 to 1, 4 to 2, 4 to 3, 3 to 2, 3 to 1, 2 to 1)
2. four (4 to 1, 3 to 1, 2 to 1, 1 to nucleus)
3. seven (4 to 1, 4 to 2, 4 to 3, 3 to 2, 3 to 1, 2 to 1, 1 to nucleus)

Light

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