Quiz
Astronomy Exam 1 - 2
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Fragen in diesem Quiz (27)
1Which of the following best describes the modern definition of a constellation?
- Aa region of the celestial sphere
- Ba Greek mythological figure
- Ca pattern of bright stars in the sky
- Da group of stars that all lie at about the same distance from Earth
- Ea collection of stars that are near one another in space
2Which of the following statements about the celestial equator is true at all latitudes?
- AIt lies along the band of light we call the Milky Way.
- BIt extends from your horizon due north, through your zenith, to your horizon due south.
- CIt represents an extension of Earth's equator onto the celestial sphere.
- DIt extends from your horizon due east, through your zenith, to your horizon due west.
- EIt cuts the dome of your sky exactly in half.
3What is the ecliptic?
- Athe Sun's apparent path along the celestial sphere
- Bwhen the Moon passes in front of the Sun
- Cthe constellations commonly used in astrology to predict the future
- Dthe Sun's daily path across the sky
- Ethe Moon's apparent path along the celestial sphere
4When we look into the band of light in our sky that we call the Milky Way, can we see distant galaxies? Why or why not?
- AYes, they appear as small, fuzzy patches on the other side of our galaxy.
- BYes, there are many other galaxies that we see inside the Milky Way.
- CNo, because there are only galaxies above and below the plane of the Milky Way.
- DNo, because the stars, gas, and dust of the Milky Way block us from seeing them.
- ENo, we cannot see any other galaxies from Earth.
5Which of the following correctly describes the meridian in your sky?
- Athe boundary between the portion of the celestial sphere you can see at any moment and the portion that you cannot see
- Bthe point directly over your head
- Ca half-circle extending from your horizon due east, through your zenith, to your horizon due west
- Da half-circle extending from your horizon due east, through the north celestial pole, to your horizon due west
- Ea half-circle extending from your horizon due north, through your zenith, to your horizon due south
6How many arcseconds are in 1°?
- A360
- B10,000
- C60
- D3,600
- E100
7Which of the following statements does not use the term angular size or angular distance correctly?
- AYou can use your outstretched hand to estimate angular sizes and angular distances
- BThe angular size of the Moon is about 1/2 degree.
- CThe angular distance between those two houses in the distance is 30°.
- DThe angular size of the Sun is about the same as that of the Moon.
- EThe angular distance between those two bright stars in the sky is about 2 meters.
8We describe a position on Earth's surface by stating its
- Alatitude and longitude.
- Baltitude and azimuth.
- Cmeridian and longitude.
- Dlatitude and direction.
- Ealtitude and direction.
9What makes the North Star, Polaris, special?
- AIt can be used to determine your longitude on Earth.
- BIt is the star directly on your northern horizon.
- CIt is the star straight overhead.
- DIt appears very near the north celestial pole.
- EIt is the brightest star in the sky.
10By locating the north celestial pole (NCP) in the sky, how can you determine your latitude?
- AThe azimuth of the NCP is the same as your latitude.
- BThe altitude of the NCP is the same as your distance from the North Pole.
- CThe altitude of the NCP is the same as your latitude.
- DThe altitude of the NCP is your angular distance from the North Pole.
- EThe azimuth of the NCP is the angular distance from the North Pole.
11Why do we have seasons on Earth?
- AAs Earth goes around the Sun and Earth's axis remains pointed toward Polaris, the Northern and Southern hemispheres alternately receive more and less direct sunlight.
- BEarth's distance from the Sun varies, so that it is summer when we are closer to the Sun and winter when we are farther from the Sun.
- CThe tilt of Earth's axis constantly changes between 0 and 23 1/2°, giving us summer when Earth is tilted more and winter when it is straight up.
- DSeasons are caused by the influence of the planet Jupiter on our orbit.
12Why is it summer in the Northern Hemisphere when it is winter in the Southern Hemisphere?
- AThe Northern Hemisphere is tilted away from the Sun and receives more indirect sunlight.
- BIt isn't: both hemispheres have the same seasons at the same time.
- CThe Northern Hemisphere is tilted toward the Sun and receives more direct sunlight.
- DThe Northern Hemisphere is "on top" of Earth and therefore receives more sunlight.
- EThe Northern Hemisphere is closer to the Sun than the Southern Hemisphere.
13Which of the following statements about lunar phases is true?
- AThe full Moon sometimes rises around midnight.
- BThe time between new Moons is two weeks.
- CIt is possible to have two full Moons during January, but not during February.
- DIt is possible to have two full Moons during November, but not during December.
- EThe time from one new Moon to the next new Moon is the same as the time from first-quarter Moon to third-quarter Moon.
14Which of the following is not a phase of the Moon?
- Athird-quarter Moon
- Bhalf Moon
- Cnew Moon
- Dfull Moon
- Efirst-quarter Moon
15If the Moon is setting at 6 A.M., the phase of the Moon must be
- Anew.
- Bthird quarter.
- Cfull.
- Dwaning crescent.
- Efirst quarter.
16If the Moon is rising at midnight, the phase of the Moon must be
- Athird quarter.
- Bfull
- Cwaning crescent.
- Dwaxing crescent.
- Efirst quarter.
17At approximately what time would a full Moon be on your meridian?
- Amidnight
- Bnoon
- C6 A.M
- D9 A.M.
- E6 P.M
18Why do we see essentially the same face of the Moon at all times?
- Abecause the Moon has a nearly circular orbit around Earth
- Bbecause the Moon does not rotate
- Cbecause the Sun illuminates only one half at a time
- Dbecause the other face points toward us only at new Moon, when we can't see the Moon
- Ebecause the Moon's rotational and orbital periods are equal
19Which of the following statements about the Moon is true?
- AThe Moon's distance from Earth varies during its orbit.
- BThe side of the Moon facing away from Earth is in perpetual darkness.
- CIf you see a full Moon from North America, someone in South America would see a new Moon.
- DThe Moon goes through a cycle of phases because it always has the same side facing Earth.
- EThe Moon is visible only at night.
20All of the following statements are true. Which one explains the reason why there is not a solar eclipse at every new Moon?
- AThe Moon rotates synchronously with its revolution about Earth.
- BThe Moon is the primary cause of tides on Earth.
- CThe orbital plane of the Moon is tilted by about 5° to the ecliptic plane.
- DThe sidereal month is shorter than the lunar month.
- EThe nodes of the Moon's orbit precess with an 18-year period.
21 What conditions are required for a solar eclipse?
- AThe phase of the Moon must be full, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun.
- BThe phase of the Moon must be new, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun.
- CThe phase of the Moon can be new or full, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun.
- DThe phase of the Moon must be new, and the Moon's orbital plane must lie in the ecliptic.
- EThe phase of the Moon must be full, and the Moon's orbital plane must lie in the ecliptic.
22What conditions are required for a lunar eclipse?
- AThe phase of the Moon must be full, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun.
- BThe phase of the Moon must be new, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun.
- CThe phase of the Moon must be full, and the Moon's orbital plane must lie in the ecliptic.
- DThe phase of the Moon must be new, and the Moon's orbital plane must lie in the ecliptic.
- EThe phase of the Moon can be new or full, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun.
23If part of the full Moon passes through Earth's umbra, we will see a(n)
- Atotal lunar eclipse.
- Bpartial solar eclipse.
- Cpenumbral lunar eclipse.
- Dannular eclipse.
- Epartial lunar eclipse.
24What is the Saros cycle?
- Athe period between eclipses
- Bthe 18-year cycle over which the pattern of eclipses repeats
- Cthe period between total solar eclipses
- Dthe period between a total solar eclipse and a total lunar eclipse
- Ethe roughly 6-month period between eclipse seasons
25What happens during the apparent retrograde motion of a planet?
- AThe planet moves backward (westward) through the sky over the course of a single night.
- BThe planet appears to change directions and move westward with respect to the stars over a period of many nights.
- CThe planet rises in the west and sets in the east.
- DThe planet moves through constellations that are not part of the zodiac.
- EThe planet moves backward in its orbit around the Sun.
26What causes the apparent retrograde motion of the planets?
- AAs Earth passes another planet, the other planet appears to move backward with respect to the background stars, but the planet's motion does not really change.
- BAs Earth passes another planet, its gravitational pull slows down the other planet so that it appears to be traveling backward.
- CWhen planets are farther from the Sun, they move slower than when they are nearer the Sun; it is during this slower period that they appear to move backwards.
- DThe other planets never really appear to move backward; the background stars shift due to Earth's revolution around the Sun.
- EApparent retrograde motion is an illusion created by turbulence in Earth's atmosphere.
27Which of the following statements about parallax is not true?
- AAncient astronomers were unable to measure parallax and used the absence of observed parallax as an argument in favor of an Earth-centered universe.
- BYou can demonstrate parallax simply by holding up a finger and looking at it alternately from your left and right eyes.
- CThe technique of stellar parallax was used by Hubble to determine that the Andromeda Galaxy (M 31) is about 2 million light-years away.
- DThe existence of stellar parallax is direct proof that Earth orbits the Sun.
- EMeasurement of stellar parallax allows us to determine distances to nearby stars.
Informationen
- Beschreibung
- Astronomy Quiz am Astronomy Exam 1 - 2, erstellt von Tyler Bakley am 27/09/2016.
- Autor
- Tyler Bakley
- Sprache
- English
- Aufrufe
- 8
- Schlagwörter
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