Frontiers in Astronomy Final Exam
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Astronomical unit - CORRECT ANSWER - Distance between the Earth and the sun
Lightyear - CORRECT ANSWER - Distance light travels in a year (186,282 mi/sec)
Parsec - CORRECT ANSWER - 3.2 light years
Retrograde motion - CORRECT ANSWER - Planets appear to move backwards as they
orbit the sun (illusion)
Ptolemy - CORRECT ANSWER - Who discovered retrograde motion?
Deferents - CORRECT ANSWER - Planets move in small circles as they move in these
large circles around the Earth
Epicycles - CORRECT ANSWER - Planets move in these small circles as they move in
large circles around the Earth
Copernicus - CORRECT ANSWER - Who came up with the heliocentric theory?
Aberration of starlight - CORRECT ANSWER - When Earth is on the other side of its
orbit, light rays from the stars seem to bend in the opposite direction
Earth is closest to the sun during the coldest month - CORRECT ANSWER - What is
Kepler's 1st law of planetary motion?
, The closer a planet is to the sun, the faster it goes - CORRECT ANSWER - What is
Kepler's 2nd law of planetary motion?
The farther a planet is from the sun, the longer it takes to orbit (T^2=D^3) - CORRECT
ANSWER - What is Kepler's 3rd law of planetary motion?
Radio waves, microwaves, heat waves, infrared, visible light, ultraviolet, x-rays, gamma waves -
CORRECT ANSWER - What is the order of the electromagnetic spectrum from lowest to
highest frequency? (8)
Crest - CORRECT ANSWER - Highest point of a wave
Trough - CORRECT ANSWER - Lowest point of a wave
Amplitude - CORRECT ANSWER - Height of a wave
Frequency - CORRECT ANSWER - Number of cycles/sec
Luminosity - CORRECT ANSWER - Process where an electromagnetic wave (light wave)
is produced
Coherent light - CORRECT ANSWER - All light waves are in phase with each other
(fiber optics/laser)
Reflection - CORRECT ANSWER - When light bounces off a surface (< in = < out)
Absorption - CORRECT ANSWER - When light is kept by a surface & changed to heat
(kinetic energy)
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Astronomical unit - CORRECT ANSWER - Distance between the Earth and the sun
Lightyear - CORRECT ANSWER - Distance light travels in a year (186,282 mi/sec)
Parsec - CORRECT ANSWER - 3.2 light years
Retrograde motion - CORRECT ANSWER - Planets appear to move backwards as they
orbit the sun (illusion)
Ptolemy - CORRECT ANSWER - Who discovered retrograde motion?
Deferents - CORRECT ANSWER - Planets move in small circles as they move in these
large circles around the Earth
Epicycles - CORRECT ANSWER - Planets move in these small circles as they move in
large circles around the Earth
Copernicus - CORRECT ANSWER - Who came up with the heliocentric theory?
Aberration of starlight - CORRECT ANSWER - When Earth is on the other side of its
orbit, light rays from the stars seem to bend in the opposite direction
Earth is closest to the sun during the coldest month - CORRECT ANSWER - What is
Kepler's 1st law of planetary motion?
, The closer a planet is to the sun, the faster it goes - CORRECT ANSWER - What is
Kepler's 2nd law of planetary motion?
The farther a planet is from the sun, the longer it takes to orbit (T^2=D^3) - CORRECT
ANSWER - What is Kepler's 3rd law of planetary motion?
Radio waves, microwaves, heat waves, infrared, visible light, ultraviolet, x-rays, gamma waves -
CORRECT ANSWER - What is the order of the electromagnetic spectrum from lowest to
highest frequency? (8)
Crest - CORRECT ANSWER - Highest point of a wave
Trough - CORRECT ANSWER - Lowest point of a wave
Amplitude - CORRECT ANSWER - Height of a wave
Frequency - CORRECT ANSWER - Number of cycles/sec
Luminosity - CORRECT ANSWER - Process where an electromagnetic wave (light wave)
is produced
Coherent light - CORRECT ANSWER - All light waves are in phase with each other
(fiber optics/laser)
Reflection - CORRECT ANSWER - When light bounces off a surface (< in = < out)
Absorption - CORRECT ANSWER - When light is kept by a surface & changed to heat
(kinetic energy)
