Astro 1101 Exam 1 ACTUAL QUESTIONS
AND CORRECT ANSWERS
what is the astronomical unit? (AU) - CORRECT ANSWERS average distance between
the earth and sun
example of annual motion - CORRECT ANSWERS retrograde motion
over the course of a year, the sun's position relative to the stars appears to move about 1 degree
per day _____ as a result of _______. - CORRECT ANSWERS west to east, the earth's
orbit around the sun
example of daily motion? - CORRECT ANSWERS stars rising and setting
best for measuring distance to mars - CORRECT ANSWERS AU
best for measuring the oval - CORRECT ANSWERS meters
best for measuring the distance to the nearest star - CORRECT ANSWERS light years
best for measuring the size of the universe - CORRECT ANSWERS light years
galileo used experiments with falling weights to demonstrate that two massive bodies in a
gravitational field fall with: - CORRECT ANSWERS the same acceleration independent of
their masses
, kepler's first law states that the orbits of the planets are: - CORRECT ANSWERS ellipses
with the sun at one focus
newton showed that keeper's second law of planetary motion is a consequence of: - CORRECT
ANSWERS the conservation of angular momentum
two bodies, A and B, have the same angular sizes as seen from your location, but B is 3 times
further away than A. which object is physically larger? - CORRECT ANSWERS object B
is physically larger
the failure to detect the parallaxes of stars during Copernicus's time and before, was used as
evidence that: - CORRECT ANSWERS the earth does not move
in the copernican system, why do venus and mercury always appear close to the sun as seen in
the sky? - CORRECT ANSWERS their orbits are closer to the sun than earth's
galileo's telescopic observations of the phases of venus were significant because - CORRECT
ANSWERS Ptolemy's model predicted different phases than seen
object a has a mass of 1 kg. object b has a mass of 50 kg. if the same force is applied to both, -
CORRECT ANSWERS B will accelerate by 1/50th the acceleration of A
two bodies, a and b, are the same physical size, but b is 4 times further away than a. which body
will have the smaller angular size and by how much? - CORRECT ANSWERS object B
appears 4 times smaller than A.
the copernican system violated which aristotelian idea? - CORRECT ANSWERS that the
earth is fixed and unmoving
AND CORRECT ANSWERS
what is the astronomical unit? (AU) - CORRECT ANSWERS average distance between
the earth and sun
example of annual motion - CORRECT ANSWERS retrograde motion
over the course of a year, the sun's position relative to the stars appears to move about 1 degree
per day _____ as a result of _______. - CORRECT ANSWERS west to east, the earth's
orbit around the sun
example of daily motion? - CORRECT ANSWERS stars rising and setting
best for measuring distance to mars - CORRECT ANSWERS AU
best for measuring the oval - CORRECT ANSWERS meters
best for measuring the distance to the nearest star - CORRECT ANSWERS light years
best for measuring the size of the universe - CORRECT ANSWERS light years
galileo used experiments with falling weights to demonstrate that two massive bodies in a
gravitational field fall with: - CORRECT ANSWERS the same acceleration independent of
their masses
, kepler's first law states that the orbits of the planets are: - CORRECT ANSWERS ellipses
with the sun at one focus
newton showed that keeper's second law of planetary motion is a consequence of: - CORRECT
ANSWERS the conservation of angular momentum
two bodies, A and B, have the same angular sizes as seen from your location, but B is 3 times
further away than A. which object is physically larger? - CORRECT ANSWERS object B
is physically larger
the failure to detect the parallaxes of stars during Copernicus's time and before, was used as
evidence that: - CORRECT ANSWERS the earth does not move
in the copernican system, why do venus and mercury always appear close to the sun as seen in
the sky? - CORRECT ANSWERS their orbits are closer to the sun than earth's
galileo's telescopic observations of the phases of venus were significant because - CORRECT
ANSWERS Ptolemy's model predicted different phases than seen
object a has a mass of 1 kg. object b has a mass of 50 kg. if the same force is applied to both, -
CORRECT ANSWERS B will accelerate by 1/50th the acceleration of A
two bodies, a and b, are the same physical size, but b is 4 times further away than a. which body
will have the smaller angular size and by how much? - CORRECT ANSWERS object B
appears 4 times smaller than A.
the copernican system violated which aristotelian idea? - CORRECT ANSWERS that the
earth is fixed and unmoving
