Astro 103 quiz aac

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How many stars can you see with your naked eye on a clear, moonless night from a dark location?

c) a few thousand

Which of the following best describes the modern definition of a constellation?

a) a region of the celestial sphere

Which of the following statements about the celestial equator is true at all latitudes?

e) It represents an extension of Earth’s equator onto the celestial sphere

What is the ecliptic?

a) the Sun’s apparent path along the celestial sphere

Which of the following correctly describes the meridian in your sky?

e) a half-circle extending from your horizon due north, through your zenith, to your horizon due south

What is a circumpolar star?

e) a star that always remains above your horizon and appears to rotate around the celestial pole

We can describe a position on Earth’s surface by stating its:

d) latitude and longitude

Orion is visible on winter evenings in the northern hemisphere but not summer evenings because of:

e) the location of Earth in its orbit

Why do we have seasons on Earth?

d) As Earth goes around the Sun and Earth’s axis remains pointed toward Polaris, the Northern and Southern hemisphere alternately receive more and less direct sunlight.

Which of the following statements about the constellations is false?
a) Some constellations can be seen in both the winter and summer
b) Some constellations can be seen from the Northern and Southern hemispheres
c) It is possible to see all the constellations from the Earth’s equator
d) There are only 88 official constellations
e) Most constellions will be unrecognizable hundreds of years from now

e) Most constellions will be unrecognizable hundreds of years from now

You are standing on Earth’s equator. Which way us Polaris, the North star?

b) on the northern horizon

How many arc-seconds are in 1 degree?

b) 3,600

When we look into the band of light in our sky that we call the Milky Way, we can see we distant galaxies? Why or why not?

c) No, because the stars, gas, and dust of the Milky Way block us from seeing them, however we can see close galaxies

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