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31 Cards in this Set
- Front
- Back
Apparent magnitude |
Brightness of a star as it appears to an observer on earth |
|
Giant blue |
Hottest starscontinuous |
|
Kind of spectrum given off by a hot glowing object |
Continuous |
|
Red dwarfs |
Coolest |
|
Absolute magnitude |
Real or brightness of a star |
|
Betelgeuse |
Example of a supergiant of a star |
|
Astronomical unit |
Measurement of distances |
|
White dwarf star |
Smallest stars |
|
The sun appears to be a very large star because it is so close to us |
True |
|
The invention of telescopes has increased what people know about the universe |
True |
|
Our sun is about medium range in size and temperature |
True |
|
Many amateur astronomers have contributed to the science of astronomy |
True |
|
The Hubble Space Telescope was named after Grote Weber |
False |
|
Helium was discovered on earth years after it had been discovered on the sun |
True |
|
The distance from earth to the sun can only be measured in astronomical units |
False |
|
The temperature of a star is related to its ... |
Color and brightness |
|
Which of the following stars is the coolest? Blue-white, red, yellow, white |
Red |
|
What measure is used to determine a stars absolute magnitude? |
Luminosity |
|
If a star has a negative magnitude, it is not bright |
False |
|
It is proposed that red giants are: |
Old and dying |
|
The largest known stars are called |
Supergiants |
|
Stars are ranked by their light intensity |
True |
|
Evidence which confirms the “birth” of a star has been observed. |
False |
|
Elements present in stars may be identified by ________ lines on the spectrum. |
Dark |
|
Sort the light spectrum from the shortest wavelength to the longest wavelength. |
Violet Blue Green Yellow Orange Red |
|
Which type of spectrum is expected from a glowing hot solid? |
Continuous |
|
The dark-line spectrum may be seen through a spectroscope when looking at which of the following? |
The sun and stars |
|
All the remaining elements other than hydrogen and helium comprise ______% of the mass of the stars. |
1% |
|
The brightness of a star is measured by: |
Magnitude |
|
The sun is brighter than all other stars because of its: |
Apparent magnitude |
|
The average distance from the earth to the _______ is one astronomical unit. |
Sun |