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Ch 24 Stars, galaxies and the universe > Ch 24 stars, galaxies and the universe > Flashcards

Ch 24 stars, galaxies and the universe Flashcards

1
Q

Who developed a system for naming stars using Greek letters and Latin forms of the stars’ constellations name?

A

Johann Bayer

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2
Q

Which pair of elements makes up our sun?

A

hydrogen and helium

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3
Q

Planetary nebulas, white dwarfs, and neutron stars are what stage of a stars life?

A

later

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4
Q

What two factors plot stars on the HR diagram?

A

temperature and luminosity

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5
Q

Charles Messier cataloged nebulas to help astronomers avoid confusing them with

A

comets

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6
Q

Two stars close together are a

A

visual double star

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7
Q

The secular view of cosmology states the universe is how many billions of years old?

A

13.8

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8
Q

A secular astronomer believes the first stage of stellar evolution is

A

a protostar

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9
Q

The universe is immense because it

A

shows how great God is

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10
Q

True or False: a star that has a diameter 100 times larger than our sun is classified as a giant

A

False

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11
Q

True or False: The sun is on the main sequence of the HR diagram

A

True

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12
Q

True or False: The Big Bang does not address what we observe about the universe

A

False

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13
Q

True or False: Elliptical are the largest type of galaxy

A

True

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14
Q

True or False: Globular clusters are held together by gravity, but open clusters are not

A

False

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15
Q

True or False: Cosmologists assume the universe is old because light travels fast

A

False

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16
Q

A recognizable pattern of stars is a

A

asterism/constellation

17
Q

The brightness of a star observed from earth is its

A

apparent magnitude

18
Q

A cloud of dust and gas is a

A

nebula

19
Q

The process of stellar birth, age and death is

A

stellar evolution

20
Q

The Milky Way, Andromeda and many other small galaxies for the

A

local galactic group

Ch 24 Stars, galaxies and the universe (1 decks)

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