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Science Review
Test Description: Review for the science final
Instructions: Answer all questions to get your test result.
1) The average distance from the Earth to the Sun is
A
10,000,000 leagues
B
1 astronomical unit
C
10 parsecs
D
100,000,000 meters
2) What shape is the Milky Way?
A
spiral
B
giant elliptical
C
dwarf elliptical
D
irregular
3) Which BEST describes the center of the Milky Way?
A
The center of the Milky Way is densely populated by stars.
B
Only gas and dust are at the center of the Milky Way.
C
One super-massive star is found at the center of the Milky Way.
D
There are a small number of stars in the center of the Milky Way.
4) Which BEST describes the age of stars in the Milky Way?
A
The oldest stars are in the galactic center, while the youngest are in the spiral arms.
B
There is no pattern to the age distribution of stars in the Milky Way.
C
The Milky Way contains only very young stars.
D
The youngest stars are in the galactic center, while the oldest are in the spiral arms.
5) Which unit of measure BEST describes the distance between stars within a galaxy?
A
kilometer
B
light-year
C
Angstrom
D
meter
6) The Aurora Borealis, sometimes called the Northern Lights, is a broad display of faint light in the northern skies at night. What is the main cause of these lights?
A
The Coriolis effect leads to friction between particles in the atmosphere which produces light.
B
The changing tides create the lights in the polar regions of Earth.
C
Charged particles from solar wind enter Earth’s atmosphere and interact with atmospheric gases, crea
D
The Sun’s electromagnetic energy in the x-ray wavelength band interacts with the cold polar air to c
7) One evening, several regional electrical power grids were disrupted. At the same time, cellphone users lost service. Which solar phenomena is the most likely cause?
A
Oort minima
B
solar flares
C
coronal turbulence
D
sunspot activity
8) If the Sun stopped producing energy, then all fusion would cease in its
A
Core
B
Corona
C
Lithosphere
D
radiative zone
9) Which of these statements about the properties of a star is TRUE?
A
All stars in the universe are roughly the same age.
B
The more massive a main sequence star is the cooler the star’s temperature will be.
C
There is no relationship between a star’s temperature and its rate of nuclear reaction.
D
The mass and composition of a star determine almost all of its other properties.
10) The term for the total rate at which a star emits radiation energy is:
A
absolute magnitude
B
luminosity
C
apparent magnitude
D
temperature
*select an answer for all questions
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