ast hw2

11. Two stars that are in the same constellation -must both be part of the same cluster of stars in space. -must both have been discovered at about the same time. -may actually be very far away from each other.

-may actually be very far away from each other.

15. A week after full moon, the Moon's phase is -first quarter. -third quarter. -new.

-third quarter

8. What is the approximate date when the Sun's position along the Ecliptic crosses the Celestial Equator as it moves from the northern portion of the celestial sphere to the southern portion? -September 22 -December 21 -July 22 -March 21

September 22

1. As seen from Earth, the Sun spends approximately 6 months north of the celestial equator and approximately 6 months south of the celestial equator. -True -False -It depends upon the observer's location on the Earth

True

5. If the Earth's orbit were a perfect circle, we would not experience seasons. -true -false

false

2. If the Moon sets around sunrise, its phase must be -full. -first quarter. -third quarter. -waning crescent -waxing crescent.

full

3. If you see the Sun rising precisely due east, -you must be located at Earth's equator. -it must be the day of either the spring or the autumnal (fall) equinox. -it must be the day of the summer solstice.

it must be the day of either the spring or the autumnal (fall) equinox.

9. Bloomington and Beijing have about the same latitude but very different longitudes. People viewing tonight's night sky in these two places will see a sky that -looks about the same. -has completely different sets of constellations. -has partially different sets of constellations.

looks about the same.

6. Which of the following might we expect to see setting in the eastern sky? -an inferior planet -a superior planet -none of the above -the Moon, as seen from the southern hemisphere -circumpolar stars as seen in the southern hemisphere

none of the above

10. If there is going to be a total lunar eclipse tonight, then you know that -the Moon's phase is full. -the Moon's phase is new -the Moon is unusually close to Earth. -it must be the day of either the summer or the winter solstice.

the Moon's phase is full.

7. The fact that we always see the same face of the Moon tells us that -the Moon does not rotate. -the Moon's rotation period is the same as its orbital period. -the Moon looks the same on both sides.

the Moon's rotation period is the same as its orbital period.

4. The names of the seven days of the week are based on the -seven largest constellations of the ancient world. -the Sun, Moon, and five naked eye planets. -seven brightest stars in the prominent constellation Orion. -most popular Norse gods. -seven planets closest to the Sun.

the Sun, Moon, and five naked eye planets.

13. In winter, Earth's axis points toward the star Polaris. In spring, -the axis also points toward Polaris. -the axis points toward Vega. -the axis points toward the Sun.

the axis also points toward Polaris.

14. When it is summer in Australia, the season in the United States is -winter. -summer. -spring.

winter

12. The north celestial pole is 35° above your northern horizon. This tells you that -you are at latitude 35°N. -you are at longitude 35°E. -you are at latitude 35°S.

you are at latitude 35°N.