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The Sun #1
Test Description: Practice Review Time
Instructions: Answer all questions to get your test result.
1) The sun converts matter into energy in the
A
convective zone
B
radioactive zone
C
corona
D
core
2) Most of the sun's energy is a result of
A
nuclear division
B
nuclear fissure
C
nuclear fission
D
nuclear fusion
3) Auroras are frequently seen
A
every 11 years
B
after solar flares
C
before a sunspots cycle
D
near the equator
4) How long is the average sunspot cycle?
A
100,000 years
B
11 years
C
110 years
D
1,100 years
5) What elements make up most of the sun's mass?
A
Carbon and Oxygen
B
Hydrogen and Helium
C
Helium and Nitrogen
D
Carbon and Hydrogen
6) How are auroras caused?
A
the solar wind bends around Earth
B
caused by the interaction of solar winds and Earth's magnetosphere
C
caused by the interaction of solar wind and Earth's atmosphere
D
the solar wind changes as it gets farther from the sun
7) The main factor that shapes the life and eventual death of a star is its
A
mass
B
temperature
C
diameter
D
color
8) Strong magnetic fields on regions of the sun lead to sunspots because
A
more energy is being transferred to the region
B
convection slows and energy decreases
C
convection increases and energy increases
D
the Sun's surface temperature vary wildly
9) During the main sequence stage, how is energy generated in the star's core?
A
Carbon fuses into hydrogen
B
Carbon fuses into iron
C
Carbon fuses into oxygen
D
Hydrogen fuses into helium
10) How long would a star such as the sun's mass stay on the main sequence?
A
a million years
B
a thousand years
C
10 billion years
D
10 trillion years
*select an answer for all questions
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