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Earth & Space Science Astronomy 1 Flashcards | StudBud
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Earth & Space Science Astronomy 1
Earth & Space Science Astronomy 1
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Basic astronomy of the Universe beyond the Solar System.
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
Chemical elements more massive than iron are produced by _____________________.
blue giants
yellow dwarfs
red giants
supernovae (pl.)
2
The most common chemical element in the Universe is ______________.
hydrogen
helium
carbon
iron
3
The most massive chemical element produced in normal stellar fusion is _______________.
helium
iron
silicon
carbon
4
The Sun was formed by _______________________.
a collision of large comets
an imploding black hole
gravitationally condensing gas
outgassing neutron stars
5
Sunspots are darker than the surrounding Sun's surface because _____________________.
They are relatively hotter regions.
They are relatively cooler regions.
6
Which is the closest
scientific
estimate of the age of our Universe?
1 million years
1 billion years
100 million years
10 billion years
7
Along the Main Sequence, the hotter the star the _______________ its luminosity.
brighter
dimmer
8
A byproduct of hydrogen fusion in stars is ________________ plus a neutron and a lot of energy.
carbon
helium
lithium
9
Which fact helps to establish the nearest credible approximation of the age of the Universe?
how far back your grandparents recall
the age of the oldest fossils
the life cycle of stars
the age of the pyramids
10
As the color of stars trends from blue to yellow, star temperature ______________.
increases
stays the same
decreases
follows no trend
11
The hottest, brightest Main Sequence stars are __________________.
type K
type O
type M
type A
12
Which is not supporting scientific evidence for the Big Bang theory?
Existence of more lighter elements
Cosmic microwave background radiation
Red shift (stars expanding away from us)
Dinosaur extinction
13
Which is not a harmful effect of solar flares and CMEs?
corrosion in the Alaskan pipeline
radio interference
increased sunburn risk
electric power outages
14
Our Sun will become in its
next
phase _________________ in a few billion years.
a blue giant
a neutron star
a red giant
a white dwarf
15
Which layer of the Sun generates the most visible light that we see here on Earth?
core
chromosphere
photosphere
corona
16
Why should you never trust an atom?
They make up everything.
It's a Bohr!
It's neutral.
The electrons have a lot of negative PR.
17
The more massive a star the ___________ its life cycle and the _____________ it shines.
longer, less bright
shorter, less bright
shorter, brighter
longer, brighter
18
Which idea expresses the notion that more distant galaxies are moving away from us faster?
Hubble's Law
Big Bulge Theory
Black Swan Theory
Blue Shift Hypothesis
19
Stars larger than about 8 solar masses but less than about 20 solar masses will become _______.
brown dwarfs
white dwarfs
neutron stars
black holes
20
Which best describes the process of "burning" in a star ?
spontaneous ignition
chemical combustion
nuclear fission
nuclear fusion
