1. The total number of stars in the observable universe is more than A. 100 quad
ID: 1518388 • Letter: 1
Question
1. The total number of stars in the observable universe is more than
A. 100 quadrillion.
B. 100 billion billion.
C. 100 trillion.
2. A black hole
A. Is formed upon the collapse of ultra supermassive stars.
B. Is the result of a Supernova.
3. Stars within a single constellation such as the Big Dipper
A. are all the same distance from Earth.
B. are part of a celestial sphere. (This answer was individually wrong)
C. Appear to turn nightly about Earth's north-south axis.
D. All of the above are correct
4. The difference between apparent brightness and luminosity is that
A. Luminosity is a good indicator of the energy output of a star.
B. Luminosity depends on the distance between Earth and a star
C. Apparent brightness indicates temperature while luminosity indicates energy output.
5. A star's color corresponds to its
A. Distance from Earth.
B. Distance from our Sun
C. Surface temperatures.
6. When you look up at the stars at night you know that
A. They are much closer than the next nearest galaxy.
B. The stars you see have always shined.
7. Most of the atoms in the universe are thought to be
A. Hydrogen
B. Iron
C. Helium
8. Diurnal motion describes
A. The movement of the Sun across the sky.
B. Which stars can be seen in the day.
C. The constellations of the polar region.
Explanation / Answer
1. The total number of stars in the observable universe is more than
A. 100 quadrillion.
B. 100 billion.
C. 100 trillion.
Option B
2. A black hole
A. Is formed upon the collapse of ultra supermassive stars.
B. Is the result of a Supernova.
Option A
3. Stars within a single constellation such as the Big Dipper
A. are all the same distance from Earth.
B. are part of a celestial sphere. (This answer was individually wrong)
C. Appear to turn nightly about Earth's north-south axis.
D. All of the above are correct
Option D
4. The difference between apparent brightness and luminosity is that
A. Luminosity is a good indicator of the energy output of a star.
B. Luminosity depends on the distance between Earth and a star
C. Apparent brightness indicates temperature while luminosity indicates energy output.
Option A
5. A star's color corresponds to its
A. Distance from Earth.
B. Distance from our Sun
C. Surface temperatures.
Option C
6. When you look up at the stars at night you know that
A. They are much closer than the next nearest galaxy.
B. The stars you see have always shined.
Option A
7. Most of the atoms in the universe are thought to be
A. Hydrogen
B. Iron
C. Helium
Option A
8. Diurnal motion describes
A. The movement of the Sun across the sky.
B. Which stars can be seen in the day.
C. The constellations of the polar region.
Option A
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