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WorksheetsAstro 10 Light
Total questions: 11
Worksheet time: 6mins
Radio waves and visible light are both types of EM radiation. What about them is the same?
Speed
Wavelength
Frequency
Energy
As the frequency of EM radiation increases, what happens to the wavelength?
Increases
Stays the same
Decreases
Not enough information to tell
Which color of visible light has the shortest wavelength?
Red
Green
Blue
Violet
All objects naturally give off EM radiation. What does the radiation of colder objects look like?
Redder and dimmer
Redder and brighter
Bluer and dimmer
Bluer and brighter
The hottest stars are always...
Blue
Large
Bright
Visible
Hydrogen has 4 absorption lines and helium has 6 absorption lines. If a star has ONLY hydrogen and helium in its spectrum, how many spectral lines would it have?
2
4
6
10
The temperature of a star determines its ________.
Color
Luminosity
Type
Size
All of a star's absorption lines are more blue than we would expect. What does that tell us about the star?
The star is hotter than it should be.
The star is cooler than it should be.
The star is moving towards Earth.
The star is moving away from Earth.
All of a star's absorption lines are more red than we would expect. What does that tell us about the star?
The star is hotter than it should be.
The star is cooler than it should be.
The star is moving towards Earth.
The star is moving away from Earth.
What kind of spectrum would a gas cloud have, given that there is a star nearby but not along the line of sight?
Emission
Absorption
Continuous
Absorption and Continuous
A blackbody that is a hotter temperature than another blackbody will produce...
More blue light, less red light
More red light, less blue light
More light at all wavelengths
Less light at all wavelengths
