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Stars, Galaxies, And The Universe AND Formation Of The Solar System #2
Test Description: Study for your test!
Instructions: Answer all questions to get your test result.
1) In what layer of the sun is energy produced?
A
chromosphere
B
core
C
radiative zone
D
convective zone
2) The planets of the solar system formed as
A
planetesimals flattened into a rotating disk
B
planetesimals collided into one another
C
the center of the gas cooled
D
the sun absorbed extra gas and dust from the solar system
3) What factor allowed the sun to form in the solar system?
A
the division of hydrogen atoms
B
intense heat at the center of the solar nebula
C
the division of helium atoms
D
the explosion of planetesimals
4) How do sunspots affect the Earth?
A
Sunspot activity could send electrically charged particles into Earth's atmosphere.
B
Sunspot activity has been linked to hurricanes
C
Sunspot activity might affect Earth's temperatures
D
low sunspot activity might contribute to global warming
5) What happens during nuclear fusion in the sun?
A
Hydrogen nuclei combine to form helium
B
Helium nuclei combine to form oxygen
C
Helium nuclei combine to form hydrogen
D
Oxygen nuclei combine to form helium
6) Hot gases are carried to the sun's visible surface from a region called the _______.
A
core
B
chromosphere
C
radiative zone
D
convective zone
7) Energy leaves the sun as light from a region called the _________.
A
chromosphere
B
corona
C
radiative zone
D
photosphere
8) How do scientists know the universe is expanding?
A
redshift
B
blueshift
C
all of the above
D
the galaxies are spreading out
9) Earth's period of revolution is about
A
three months
B
one year
C
one week
D
one day
10) What caused the solar system to form?
A
the growth of the solar nebula
B
the collapse of the solar nebula
C
the birth of a nearby star
D
nuclear fusion in the sun
*select an answer for all questions
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