Earth Science: Astronomy, Book J

Chapter 4: Stars and Galaxies

Stars and Galaxies

1.
Prominence, or huge arching columns of gas, are thought to be caused by__________.
A)the Sun's rotation
B)the rotation of the galaxy
C)the magnetic field associated with sunspots
D)Earth's magnetic field
2.
Our sun is considered a star of__________ temperature.
A)cool
B)low
C)hot
D)medium
3.
What does CME stand for?
A)Coronal Materials Ejections
B)Central Mass Ejections
C)Coronal Mass Ejections
D)Coronal Mass Emissions
4.
Once stars run out of hydrogen and the temperature begins to increase, these stars are said to be __________.
A)a white dwarf
B)a giant
C)a supernova
D)a galaxy
5.
Which, if any, of the three types of galaxies occur the most often?
A)They occur in equal amounts.
B)spiral
C)elliptical
D)irregular
6.
Another way to define "nebula" is __________.
A)exploding star
B)old star
C)young star
D)dying star
7.
Circumpolar constellations __________.
A)are located in a circular constellation.
B)appear to circle around the North Star as the Earth rotates.
C)never appear around the North Pole.
D)are always located above the North Pole.
8.
The North Star,___________, is positioned almost directly over the North Pole.
A)Betelgeuse
B)Orion
C)Polaris
D)Sirius
9.
The __________ __________ is a measure of the amount of light received on earth.
A)absolute measure
B)apparent magnitude
C)absolute magnitude
D)apparent measure
10.
A binary system is composed of ___________ stars.
A)three
B)two
C)five
D)four
11.
When fusion occurs, the mass lost is converted into __________.
A)mass
B)energy
C)matter
D)liquid
12.
The Moon orbits Earth and Earth orbits the Sun. What does the Sun orbit?
A)the Milky Way
B)It doesn't orbit.
C)the universe
D)the solar system
13.
Fusion occurs when __________ and __________ combine to make energy.
A)carbon, helium
B)hydrogen, helium
C)hydrogen, oxygen
D)carbon, oxygen
14.
By studying a star's spectra, scientists can determine __________ found in the star's atmosphere.
A)clusters
B)dust
C)gases
D)elements
15.
Particles that escape from the sun's __________ move through space as solar wind.
A)corona
B)chromosphere
C)surface
D)photosphere
16.
__________ is the process that creates energy in the sun.
A)Fission
B)Fusion
C)Blue shift
D)Parallax
17.
An aurora, like the aurora borealis is caused by
A)particles from solar flares
B)solarwind
C)solar flares
D)CME's
18.
What holds planets, stars, gas, and dust together in a galaxy?
A)inertia
B)forces
C)gravity
D)friction
19.
When a star becomes a supernova its brightness __________.
A)increases
B)decreases
C)doesn't change
D)vanishes
20.
When stars are located closer to one another, their attraction to one another increases due to __________.
A)their age
B)their temperature
C)their weight
D)gravity
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