Stars
Practice Test
1.
Constellations that can be seen all year long from a certain location are __________.
a.
seasonal
b.
binary
c.
cluster
d.
circumpolar
2.
According to the H-R diagram, which are the most common stars.
a.
white dwarfs
b.
supergiants
c.
giants
d.
main sequence
3.
The difference of two stars' spectra is due to the difference of their __________.
a.
temperature
b.
luminosity
c.
apparent magnitude
d.
composition
4.
How is the composition of a white dwarf determined?
a.
by the size of its planetary nebula
b.
by the size of the supernova
c.
by its luminosity
d.
by how many reaction phases it went through
5.
From where on the Sun does the solar wind escape?
a.
sunspots
b.
solar flares
c.
photosphere
d.
coronal holes
6.
Why doesn't apparent magnitude actually measure the brightness of the star?
a.
It doesn't account for temperature.
b.
It doesn't account for distance.
c.
It doesn't account for composition.
d.
It doesn't account for energy output.
7.
From what does a star form?
a.
a nebula
b.
a spectra
c.
a main sequence
d.
a binary
8.
Gas flows outward from the corona and forms the __________.
a.
solar flare
b.
sunspot
c.
solar wind
d.
aurora
9.
What is a spectrum that comes from noncompressed gas called?
a.
sunspot
b.
an emission spectrum
c.
corona
d.
rainbow
10.
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 very heavy elements.
b.
They're the two smallest elements.
c.
They're both metals.
d.
They're both radioactive.
11.
Which zone of the Sun moves energy through radiation?
a.
corona
b.
radiative
c.
convective
d.
photosphere
12.
Energy output from the surface of a star is called __________.
a.
absolute magnitude
b.
spectra
c.
apparent magnitude
d.
luminosity
