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