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. astrologer; neurologist

C. astrologer; astronomer

D. astronomer; psychologist

Question #2

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

A. Cassiopeia

B. Octans

C. Ophiuchus

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

B. Throw a tantrum.

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

D. Pretend they never conducted that experiment.

Question #5

Astronomy is the science that .

A. talks about the planets that are out there

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

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

D. explains how stars work

Question #6

All scientists use the scientific method.

A. False

B. True

Question #7

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

A. grams, meters, and liters.

B. kilograms, meters, and liters.

C. grams, kilometers, and liters.

D. kilograms, meters, and seconds.

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, 2.96 x 108 L

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

C. 296 kL, 2.96 x 108 L

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

Question #9

Which of the following numbers contains zeros that are significant?

A. 0.0051

B. 162

C. 9,400

D. 33,401

Question #10

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

A. 9109

B. 9,609

C. 9600

D. 8999

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. 5

B. 6

C. 10

D. 7

Question #12

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

A. hours, minutes and seconds of arc

B. degrees, minutes and seconds of arc

C. parallax hour, parmin and parsec

D. light years, light minutes and light seconds

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 famous person who lives in Hollywood

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

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. 637 x 10-4

B. 63.7 x 10-3

C. 6.37 x 102

D. 6.37 x 10-2

Question #16

How is the number 10 represented in scientific notation?

A. 10 x 100

B. 1.0 x 101

C. 0.1 x 10

D. 0.1 x 102

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