PHYS 284 1-6 FINAL Exam Questions and
Answers 2024/2025 with complete
solutions;Concordia University
1) The earliest evidence for life on Earth dates to
A) about 4.5 billion years ago.
B) about 3.8 billion years ago.
C) about 2 billion years ago.
D) about 570 million years ago.
E) about 65 million years ago.
B) about 3.8 billion years ago. C) about 2 billion years ago.
We have an expert-written solution to this problem!
,1) Why do jovian planets bulge around the equator, that is, have a
"squashed" appearance?
A) They are much more massive than the terrestrial planets.
B) Their large systems of moons and rings gravitationally attract the
mass around the equator more.
C) Their rapid rotation flings the mass near the equator outward.
D) Their internal heat sources exert a pressure against the sides of the
planets.
E) all of the above
C) Their rapid rotation flings the mass near the equator outward.
1) Approximately, what basic composition are all stars born with?
A) half hydrogen, half helium, no more than 2 percent heavier elements
B) three-quarters hydrogen, one-quarter helium, no more than 2 percent
heavier elements
,C) 90 percent hydrogen, 10 percent helium, no more than 1 percent
heavier elements
D) one-quarter hydrogen, three-quarters helium, no more than 2 percent
heavier elements
E) 98 percent hydrogen, 2 percent helium
B) three-quarters hydrogen, one-quarter helium, no more than 2 percent
heavier elements
2) How much energy does Jupiter emit compared with how much it
receives from the Sun?
A) It emits 10 times as much.
B) It emits twice as much.
C) It emits half as much.
D) It emits 10 percent as much.
E) It emits 1 percent as much.
C) It emits half as much.
1) What is the meaning of the word cosmos?
, A) the origin of Earth and life upon it
B) the light from a distant astronomical object
C) the Milky Way
D) the sum total of all matter and energy, that is, everything within and
between all galaxies
E) the dark sky
D) the sum total of all matter and energy, that is, everything within and
between all galaxies
We have an expert-written solution to this problem!
1) How many stars can you see with your naked eye on a clear,
moonless night from a dark location?
A) fewer than a thousand
B) a few thousand
C) about ten thousand
D) about a hundred thousand
E) more than you could count in your lifetime
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