Section #: 30.1
The Sun
Practice Test
1.
Where does the Sun's energy originate in the figure?
a.
A
b.
B
c.
C
d.
A and C
Hint
2.
What two elements make up 98.4 percent of the Sun's composition?
a.
oxygen and helium
b.
hydrogen and nitrogen
c.
hydrogen and helium
d.
hydrogen and carbon dioxide
Hint
3.
Why do astronomers rely on computer models for an explanation of the Sun's interior?
a.
The interior can't be directly observed.
b.
They need more than the observations of the interior.
c.
to remove the effects of the solar wind
d.
The interior is only visible during a solar eclipse.
Hint
4.
What is a spectrum that comes from noncompressed gas called?
a.
an emission spectrum
b.
rainbow
c.
sunspot
d.
corona
Hint
5.
Look at the periodic table in the figure. What is unique about the two elements that compose most of the Sun's gases?
a.
They're both metals.
b.
They're the two smallest elements.
c.
They're very heavy elements.
d.
They're both radioactive.
Hint
6.
Which zone of the Sun moves energy through radiation?
a.
corona
b.
radiative
c.
convective
d.
photosphere
Hint
7.
From where on the Sun does the solar wind escape?
a.
photosphere
b.
sunspots
c.
coronal holes
d.
solar flares
Hint
8.
What are dark spots on the Sun's photosphere called?
a.
sunspots
b.
solar winds
c.
solar flares
d.
auroras
Hint
9.
The Sun contains __________ percent of all the mass in our solar system.
a.
1
b.
10
c.
99
d.
100
Hint
10.
What layer of the Sun's atmosphere is above the chromosphere?
a.
troposphere
b.
corona
c.
photosphere
d.
stratosphere
Hint
11.
Gas flows outward from the corona and forms the __________.
a.
sunspot
b.
solar wind
c.
aurora
d.
solar flare
Hint
12.
__________ is the combining of light weight nuclei into heavier nuclei, which gives off energy that fuels the Sun.
a.
Fusion
b.
Radiation
c.
Division
d.
Fission
Hint
13.
What is the Sun's average density similar to?
a.
the density of water
b.
the density of the entire solar system
c.
the density of the rocky planets
d.
the density of the gas giant planets
Hint
14.
The lowest layer of the Sun's atmosphere is called the __________.
a.
troposphere
b.
lithosphere
c.
chromosphere
d.
photosphere
Hint
