Download Only Thirty Questions To Go (150,000 points) 1.) If the distance

Physics 1060 / Exam 1 [Form-A]
Fall 2008
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Only Thirty Questions To Go (150,000 points)
Multiple-Guess-Fill-In-The-Bubbles
1.) If the distance between the Sun and the Earth
were to be cut in half, then the Sun’s
gravitational attraction would be…
D – four times as strong.
C – and the HST have effectively expanded the size
of the universe.
2.) If the Sun were to suddenly shrink, yet keep all
its mass, then…
A – the Sun would rotate faster.
3.) Galaxy A is 100,000,000 LY away. An identical
Galaxy B is 200,000,000 LY away. Galaxy
B appears to be ____ as wide as Galaxy A.
B – one-half
4.) The following distances are equivalent. The way
in which astronomers usually state the distance to
the nearest star (other than our Sun) is…
A – 4.22 light years.
5.) A satellite in a perfectly circular orbit about the
Earth travels at a constant speed and yet it
has an acceleration. This is true because…
A – it is constantly changing direction.
B – there is a net external force from Earth’s
gravity.
C – the acceleration is perpendicular to the velocity.
D – All of the above.
6.) We say that the Sun is “overhead” at noon, but
actually the Sun in never “directly
overhead” at the zenith of the sky in
Kalamazoo since...
C – Michigan is about halfway from the equator to
the North Pole – well above the 23½° line of
the Tropic of Cancer.
7.) The only official constellations are…
B – the 88 constellations around the celestial
sphere.
8.) This is a course about the “two Hubbles”,
because Edwin Hubble …
9.) Hipparchus considered stars to be of the first
rank or first magnitude if…
A – they were the brightest stars in the night sky.
10.) We get to see more Lunar Eclipses than Solar
Eclipses because…
B – the Earth’s shadow is bigger than the Moon’s
shadow.
11.) Both the strength of a gravitational force and
the apparent brightness of an object vary
with…
D – one over the square of the distance between
1
them. ( 2 )
r
12.) The Earth is closest to the Sun when…
A – it is at perihelion.
B – it going the fastest.
C – when it is winter in the Northern Hemisphere.
D – All of the above.
13.) The Hubble Space Telescope in orbit is in…
B – free-fall.
14.) Most people spend little time looking at the
stars because…
A – air and light pollution in urban areas make it
harder to see the faintest stars.
B – electric lights and television allow us to work
and play indoors at night.
C – you can’t easily see the stars driving around at
night in your car.
D – All of the above.
15.) Kepler’s First Law includes…
B – planets orbit in elliptical orbits with the Sun at
one focus.
16.) Newton’s First Law includes…
C – an object in motion tends to stay in motion
unless acted upon by a net external force.
Physics 1060 / Exam 1 [Form-A]
Fall 2008
17.) With an apparent magnitude of -1.47, Sirius is
…
C – the brightest star in the night sky.
18.) Sirius is 8.60 LY away, so the light we see left
Sirius…
A – 8.60 years ago.
19.) The Milky Way contains 100 _____ stars.
D – billion
20.) Star HR 7162-A is similar to our own Sun. It
is 48.9 LY away. It is barely visible from
Earth with an apparent magnitude of 6.22
and an absolute magnitude of 5.34. The Sun
has an absolute magnitude of 4.8. If you
were 48.9 LY away at HR 7162-A, you…
C – would just be able to see our Sun.
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25.) When we say light from a star is red-shifted, it
is similar to the Doppler Effect with sound
from a moving train’s horn where…
D – the star is heading away from us and the horn is
lower in pitch.
26.) Star B appears to be 4 times brighter that Star
A. Star A has an apparent visual magnitude
of 3.0. The apparent visual magnitude of
Star B would be…
B – +1.5
27.) If something is called a scientific theory…
C – it is tested and refined in light of new
experiments and observations.
21.) Planets orbit the Sun in orbits which are…
C – ellipses.
28.) Astronomers can use Parallax to find the
distance to objects which are…
C – relatively close to the Earth.
Also accept E - None of the Above, due to a
comment in class about using the HST to
find parallax of distance objects.
22.) If the Earth were to suddenly stop in its orbit…
D – it would fall into the Sun.
29.) The three stars that make up the Belt of Orion
might be described as…
D – an asterism.
23.) The Solar System is several _______ miles
wide.
D – billion
30.) The observable universe appears to contain 100
_____ galaxies.
D – billion
24.) An AU is the …
A – distance from the Earth to the Sun.