Flashcard decks

Week 18: Dust and Gas

35 flashcardsby grenier-m
Study these flashcardsFree · spaced repetition · iPhone, Android, Mac & web

All cards

1
What is made out of gas and dust and is distributed throughout our galaxy?
  • Interstellar Matter
  • Interstellar Reddening
  • Reflection Nebula
  • Spin Flip Radiation
2
We study interstellar matter because:
  • It fills space with ultra violet light and such light destroys molecules leaving behind interstellar matter
  • It has everything to do with stars: stars are made of it, contribute to it, and there's a lot of it
  • It includes water, alcohol, methane, ammonia and many complex molecules that form the basis of life here on the earth and most likely elsewhere
  • It becomes electrically charged in space and then acts to attract atoms. Such atoms can then slowly form complex molecules on the grains over millions of years.
3
Interstellar matter affects starlight by:
  • Interstellar Matter
  • Reflection Nebula
  • Intersteller Reddening
  • Molecules in Space
4
What stars have lots of iron in their spectra?
  • Population II
  • Population III
  • None of Them
  • Population I
5
What stars have almost no iron?
  • Population II
  • Population I
  • None of Them
  • None of Them
6
Which stars are old?
  • Population I
  • Population II
  • All stars are the same age
7
Which stars are young?
  • Population II
  • All stars are the same age
  • Population I
8
Our sun is what kind of star? And what generation?
  • Population II/2nd
  • Population II/1st
  • Population I/3rd
  • Population I/4th
9
The horsehead nebula is a what nebula composed of dust that blocks our view of objects behind it?
  • Interstellar Nebula
  • Orion Nebula
  • Reflection Nebula
  • Dark Nebula
10
What blocks our view of galaxies if you look toward the center of the Milky Way?
  • Dust
  • Stars
  • Space
  • Interstellar Matter
11
What is caused by invisible clouds of dust in space?
  • Nebulas
  • Interstellar Reddening
  • Spin Flip Radiation
  • Interstellar Matter
12
Interstellar reddening can cause which type of star to appear very red?
  • F
  • M
  • O
  • K
13
What in space is composed of hard particles of carbon, iron, silicon and graphite?
  • Molecules
  • Interstellar Matter
  • Nebulas
  • Dust
14
The existence of what in space is evidence for dust in space?
  • Molecules
  • Interstellar Matter
  • Interstellar Reddening
  • Nebulas
15
Space is filled with what and such thing destroys molecules?
  • Interstellar Reddening
  • Ultra Violet Light
  • Interstellar Matter
  • Blue Light
16
What acts to absorb and reflect ultra violet light and thus protects molecules in space?
  • Hydrogen
  • Helium
  • Dust
  • Pleiades
17
Dust becomes electrically charged in space and then acts to attract what?
  • Hydrogen
  • Ultra Violet Light
  • Interstellar Matter
  • Atoms
18
Such atoms (that are attracted to electrically charged dust) can then slowly form complex what on the dust grain over millions of years?
  • Molecules
  • Hydrogen
  • Nebula
  • Interstellar Matter
19
What type of nebula is Pleiades?
  • Refraction Nebula
  • Reflection Nebula
  • Radiation Nebula
  • Frozen Nebula
20
Pleiades appears as if it should have a bright line spectra but instead has a what?
  • Still a Bright Line Spectra, silly
  • White Line Spectra
  • Dark Line Spectra
  • Red Light Spectra
21
The spectra is a what of a nearby star?
  • Light
  • Radiation
  • Refraction
  • Reflection
22
What type of nebula is blue in space for the same reason our sunsets appear red?
  • Reflection Nebula
  • Refraction Nebula
  • Radiation Nebula
  • All Nebulas
23
Dust absorbs and reflects what kind of light?
  • Red Light
  • Blue Light
  • Infra-Red Light
  • Ultra Violet Light
24
Red glowing gas in space is illuminated by nearby stars that supply the ultra violet light necessary to make gas what?
  • Dissapear
  • Freeze
  • Fluoresce
  • Expand
25
The Orion nebula is how many kalvins?
  • 100K
  • 100,000K
  • 1,000K
  • 10,000K
26
The Orion nebula contains enough matter to form how many solar mass stars?
  • 10,000
  • 100
  • 100,000
  • 1,000
27
You would freeze inside the Orion nebula (despite how hot) becuase the density is how much less/more than the best vacuum on Earth?
  • 10,000 less
  • 1,000x less
  • 10,000 more
  • 1,000x more
28
What type of gas is called a H II region?
  • Cold Red Glowing Gas
  • Hot Blue Glowing Gas
  • Hot Red Glowing Gas
  • Cold Blue Glowing Gas
29
The Orion nebula is in which:
  • H II
  • H I
30
Cold invisible what in space glows in radio waves?
  • Atoms
  • Hydrogen
  • Molecules
  • Dust
31
Cold invisible hydrogen in space are radio waves with the wavelength of what?
  • 210 CM
  • 20 CM
  • 21 CM
  • 200 CM
32
Cold Invisible Hydrogen is what?
  • H I
  • H II
33
What is caused by electrons changing their spin and emitting radio radiation as they do so?
  • Dust in Space
  • Molecules in Space
  • Interstellar Reddening
  • Spin Flip Radiation
34
What type of radiation in space is evidence of a cloud of cold hydrogen gas that is moving toward us?
  • 20 CM
  • 21 CM
  • 200 CM
  • 10 CM
35
Spin Flip Radiation has a cm radiation of what?
  • 30 CM
  • 21 CM
  • 10 CM
  • 20 CM
Study all 35 cards for free