E1 Astrophysics E1 - E2.4

9 Questions | By Gboulton | Updated: Mar 20, 2022 | Attempts: 776

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Introduction to Astrophysics.

Questions and Answers

1.

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
2.

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
3.

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
4.

What are the largest gravitationally bound structures?
- A.
  
  Solar system,
- B.
  
  Galaxy
- C.
  
  Stellar cluster
- D.
  
  Galaxy cluster
- E.
  
  Super cluster
5.

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
6.

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.
7.

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
8.

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.
9.

Are there any parts of this topic so far that you find difficult?