E1 Astrophysics E1 - E2.4
Introduction to Astrophysics.
- 1.Are there any parts of this topic so far that you find difficult?
- 2.What are comets made of?
- A.
Sugar and spice and all things nice?
- B.
Slugs and snails and puppy dogs' tails
- C.
Frozen ice and carbon dioxide, hydrogen and helium
- D.
Frozen ice and carbon dioxide, methane and ammonia
- E.
Hydrogen, helium, methane and ammonia
- 3.Define a light year.
- A.
The time it takes light to travel for a year.
- B.
The distance light travels in a year.
- C.
Time between starting and finishing when light travels through space
- D.
None of the above
- 4.What is the diameter of our galaxy
- A.
100 LY
- B.
1,000 LY
- C.
10,000 LY
- D.
100,000 LY
- E.
1,000,000 LY
- 5.What are the largest gravitationally bound structures?
- A.
Solar system,
- B.
Galaxy
- C.
Stellar cluster
- D.
Galaxy cluster
- E.
Super cluster
- 6.What apparent effect is caused by the rotation of the earth on its axis?
- A.
Stars move around pole star
- B.
Sun moves into different constellations during the year
- C.
Stellar parallax
- D.
Microwave background radiation
- 7.What provides the radiant energy for most stars?
- A.
Hydrogen combustion in core
- B.
Hydrogen combustion in shell.
- C.
Hydrogen fusion in core.
- D.
Hydrogen fusion in shell.
- 8.What is the most important thing about a start which determines pretty much everything about it?
- A.
Temperature
- B.
Luminosity
- C.
Mass
- D.
Age
- E.
Life expectancy
- 9.What happens to the luminosity if you compare with a start which has twice the mass (what will be the luminosity of the larger star)?
- A.
The luminosity will be half as big.
- B.
The luminosity will be the same.
- C.
The luminosity will be twice as much.
- D.
The luminosity will be 3x as much.
- E.
The luminosity will be 4x as much.
- F.
The luminosity will be 8x as much.
Questions: 10 | Attempts: 12391 | Last updated: Mar 22, 2022
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Sample QuestionThe earth is a tilted planet. What is the degree of tilt?
Questions: 8 | Attempts: 12063 | Last updated: Mar 22, 2022
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Sample QuestionWhich of these moon phases do you like the most?
Questions: 10 | Attempts: 12027 | Last updated: Mar 22, 2022
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Sample QuestionWhat type of galaxy is our Milky Way?
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