Glendale Community College » Astronomy » Astronomy 120 - Stars and Galaxies » Fall 2022

Astronomy 120 - Stars and Galaxies » Fall 2022 » Unit 1 Quiz

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Question #1

A(n) is someone whose work primarily deals with the scientific study of the contents of the sky beyond the Earth's atmosphere, whereas a(n) is someone who studies the positions of the objects in the night (or daytime) sky with the implication that these positions have an influence on our day-to-day lives and human behavior.

A. astronomer; astrologer

B. astronomer; psychologist

C. astrologer; neurologist

D. astrologer; astronomer

Question #2

Which constellation is the 13th constellation that is also considered a part of the zodiac?

A. Octans

B. Ophiuchus

C. Cassiopeia

Question #3

When scientists achieve results that they were not expecting, they do not communicate these results with their peers or the scientific community at large.

A. False

B. True

Question #4

What should a scientist do if their experimental results do not align with their expectations?

A. Publish their results anyway, then go back and try again, potentially using a new approach.

B. Pretend they never conducted that experiment.

C. Try to convince everyone that their results are exactly as they should have been.

D. Throw a tantrum.

Question #5

Astronomy is the science that .

A. tells us how our birthdays line up with the retrograde motions of the planets and how that may affect our day-to-day lives

B. explains how stars work

C. studies everything that lies beyond the outermost layer of Earth's atmosphere

D. talks about the planets that are out there

Question #6

All scientists use the scientific method.

A. True

B. False

Question #7

The base units for mass, distance, and liquid volume in the metric system are .

A. grams, kilometers, and liters.

B. kilograms, meters, and seconds.

C. kilograms, meters, and liters.

D. grams, meters, and liters.

Question #8

Your swimming pool is designed to have a volume of 296,000 liters. How else can you represent this number?

A. 296,000,000 mL, 296 kL, 2.96 x 105 L

B. 296,000,000 mL, 296 kL, 2.96 x 108 L

C. 296 kL, 2.96 x 108 L

D. 296,000,000 mL, 2.96 x 108 L

Question #9

Which of the following numbers contains zeros that are significant?

A. 0.0051

B. 33,401

C. 9,400

D. 162

Question #10

Do the math and round your answer to 4 significant figures: 10,002.015 – 393.4

A. 9,609

B. 8999

C. 9600

D. 9109

Question #11

The Galileo spacecraft traveled a total of 4,631,778,000 km before it was decommissioned from service. How many significant figures are in this number?

A. 10

B. 7

C. 5

D. 6

Question #12

The lines of right ascension, which help to map the objects of the night sky, are measured in .

A. parallax hour, parmin and parsec

B. light years, light minutes and light seconds

C. degrees, minutes and seconds of arc

D. hours, minutes and seconds of arc

Question #13

Two stars, A and B, sharing the same right ascension, have declination values of +1° (Star A) and –49° (Star B). Which is positioned higher in the night sky?

A. Star B

B. Star A

C. Both are positioned too close to determine which is higher.

Question #14

According to astronomers, a star is .

A. A burning ball of hot gas called plasma producing its own light which maintains its spherical shape by its own gravity.

B. A famous person who lives in Hollywood

C. A giant ball of burning hot gas, emitting light as a result of nuclear fission in its core.

D. The only place where nuclear fusion has been shown to happen.

Question #15

How is 0.0637 written in scientific notation?

A. 6.37 x 102

B. 637 x 10-4

C. 63.7 x 10-3

D. 6.37 x 10-2

Question #16

How is the number 10 represented in scientific notation?

A. 10 x 100

B. 0.1 x 102

C. 0.1 x 10

D. 1.0 x 101

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