Review for Astronomy 10 Midterm and Final
Midterm covers first 70 questions, Final covers all 105.
|
1. |
The coordinate used in the
terrestrial coordinate system to indicate angular distance north or south of
the equator is |
A.
declination
B.
longitude.
C.
azimuth.
D.
altitude.
E.
latitude.
|
2. |
The point in the sky that is
located 90 degrees from the celestial horizon is the |
A.
pole.
B.
equator.
C.
nadir.
D.
node.
E.
zenith.
|
3. |
The azimuth and altitude of an
object located due north and on the horizon are |
A.
azimuth 90 degrees, altitude 90 degrees.
B.
azimuth 0 degrees, altitude 0 degrees.
C.
azimuth 90 degrees, altitude 0 degrees.
D.
azimuth 180 degrees, altitude 0 degrees.
E.
azimuth 0 degrees, altitude 180 degrees.
|
4. |
Which of the following would be
the coordinates of a star that is rising in the northeast? |
A.
azimuth 60 degrees, altitude 0 degrees
B.
azimuth 180 degrees, altitude 90 degrees
C.
azimuth 75 degrees, altitude 0 degrees
D.
azimuth 75 degrees, altitude 90 degrees
E.
azimuth 145 degrees, altitude 0 degrees
|
5. |
The north-south line that passes
directly overhead is the |
A.
ecliptic.
B.
meridian.
C.
zenith.
D.
horizon.
E.
azimuth.
|
6. |
The ecliptic is the |
A.
apparent path of the Moon on the celestial sphere.
B.
plane of the Earth’s orbit projected onto the celestial sphere.
C.
plane of the Moon’s orbit.
D.
projection of the Earth’s equator on the celestial sphere.
E.
projection of the north celestial pole on the zodiac.
|
7. |
What object was located at the
center of Aristarchus’s model of the solar system? |
A.
the central fire
B.
Venus
C.
the Moon
D.
the Sun
E.
the Earth
|
8. |
How did Eratosthenes determine
the circumference of the Earth? |
A.
by noting the size of Earth’s umbral shadow
B.
by comparing the altitude of the Sun at different locations
C.
by assuming that the Earth and Moon are the same size
D.
by sailing around it
E.
by measuring the heights of distant mountains
|
9. |
In Ptolemy’s model of the
solar system, the circle on which the center of the epicycle moved about the
Earth was called the |
A.
eccentric.
B.
capital.
C.
deferent.
D.
equant.
E.
orbit.
|
10. |
Kepler’s law of equal
areas in equal time predicts that |
A.
planets move fastest at perihelion.
B.
planets are in noncircular orbits.
C.
the sun must be at the center of the solar system.
D.
planets all must lie in the same orbital plane.
E.
comets are often in unbound orbits.
|
11. |
Which of the following is one of
Kepler’s Laws of Planetary Motion? |
A.
An object in motion remains in motion.
B.
The parabola is a kind of conic section.
C.
The planet’s distance cubed is proportional to its period squared.
D.
The force of gravity fall off as the distance squared.
E.
Acceleration is proportional to unbalanced force.
|
12. |
Compared with your mass on
Earth, your mass on the Moon would be |
A.
you can’t fool me — exactly the same.
B.
about 6 times more.
C.
about 36 times less.
D.
about 6 times less.
E.
about 36 times more.
|
13. |
How will an object move if there
are no forces acting on it? |
A.
with constant acceleration
B.
it can’t move at all if no forces are present
C.
on an ellipse
D.
on a circle
E.
in a straight line at constant speed
|
14. |
Suppose an object moves in a circular
path at constant speed. What can be said about the force acting on it? |
A.
The force acting on it must be gravity.
B.
The force is only occasionally being applied on it.
C.
The force acting on it must vary in direction.
D.
There is no force acting on it.
E.
The force acting on it must constantly vary in strength.
|
15. |
What happens to the angular
momentum of a planet as it orbits the Sun? |
A.
It increases steadily with time.
B.
It increases and decreases as the planet changes speed.
C.
It remains constant.
D.
It becomes negative and then goes to zero.
E.
It gradually drops to zero.
|
16. |
If the masses of the Sun and Earth
each were doubled, the force of gravity between them would |
A.
go up by 16 times.
B.
go up by 32 times.
C.
go up by 4 times.
D.
double.
E.
remain the same.
|
17. |
Assume that Saturn is 10 times as
far from the Sun as the Earth is, and that it has 100 times the mass of the
Earth. The gravitational force between Saturn and the Sun is |
A.
100 times the force between the Earth and Sun.
B.
equal to the force between the Earth and Sun.
C.
one-tenth the force between the Earth and Sun.
D.
1/100 the force between the Earth and Sun.
E.
10 times the force between the Earth and Sun.
|
18. |
The force required to keep an object
in a circular orbit is directed |
A.
upward.
B.
in the direction in which the object is moving.
C.
away from the center of the circle.
D.
in the direction opposite to that in which the object is moving.
E.
toward the center of the circle.
|
19. |
The product of the wavelength
and frequency of a wave is equal to |
A.
the speed of the wave.
B.
the temperature of the wave.
C.
the intensity of the wave.
D.
the distance between crests of the wave.
E.
the energy of the wave.
|
20. |
How does the speed of light in
glass compare to the speed of light in a vacuum? |
A.
Trick question, light can’t travel in glass.
B.
It is larger in a vacuum.
C.
They are the same.
D.
It is larger in glass.
E.
Can't tell, it depends on the wavelength of light.
|
21. |
A TV satellite broadcasts at a
frequency of 5000 MHz (1 MHz = 1 million Hertz). What is the wavelength of this
radiation? |
A.
6 cm
B.
5 million centimeters
C.
0.3 cm
D.
1000 cm
E.
160 cm.
|
22. |
A particle of light is a |
A.
photon.
B.
proton.
C.
spectrum.
D.
angstrom.
E.
graviton.
|
23. |
More than 99% of the mass of the
solar system is contained in |
A.
Jupiter.
B.
the terrestrial planets.
C.
the Earth.
D.
the Sun.
E.
the Jovian planets.
|
24. |
An astronomical unit is |
A.
the mass of the Earth.
B.
the average distance between the Sun and Earth.
C.
the distance between the Sun and the nearest star.
D.
the angular size of the Sun.
E.
the distance between the Earth and the Moon.
|
25. |
The orbits of the major planets
are all |
A.
randomly oriented in space.
B.
circular.
C.
perpendicular to the orbit of the Earth.
D.
prograde (counterclockwise motion as viewed from the north).
E.
larger than the orbit of the Earth.
|
26. |
Which of the following is not a
terrestrial planet? |