ISP205 Chapter 2

What do astronomers mean by a constellation? A constellation is a group of stars related through an ancient story. A constellation is any random grouping of stars in the sky. A constellation is a region in the sky as seen from Earth. A constellation is a group of stars that are all located in about the same place in space.

A constellation is a region in the sky as seen from Earth.

Which of the following celestial objects do NOT rise in the east and set in the west, as viewed from Earth? (Assume that all of these objects are visible from your location on Earth, and that none of them are circumpolar.) Which of the following celestial objects do NOT rise in the east and set in the west, as viewed from Earth? (Assume that all of these objects are visible from your location on Earth, and that none of them are circumpolar.) stars the Moon galaxies the Sun All of these objects rise in the east and set in the west.

All of these objects rise in the east and set in the west.

Which of the following statements does NOT use the term angular size or angular distance correctly? Which of the following statements does NOT use the term angular size or angular distance correctly? The angular distance between those two bright stars in the sky is about 2 meters. The angular size of the Sun is about the same as that of the Moon. The angular distance between those two houses in the distance is 30 degrees. You can use your outstretched hand against the sky to estimate angular sizes and angular distances.

The angular distance between those two bright stars in the sky is about 2 meters.

Which of the following best describes why we have seasons on Earth? Earth's elliptical orbit means we are closer to the Sun and therefore receive more intense sunlight at some times of year than at others. The varying speed of Earth in its orbit around the Sun gives us summer when we are moving fastest and winter when we are moving slowest. The tilt of Earth's axis causes the Northern Hemisphere to be closer to the Sun than the Southern Hemisphere in summer, and visa versa in winter. The tilt of Earth's axis causes different portions of Earth to receive more or less direct sunlight at different times of year.

The tilt of Earth's axis causes different portions of Earth to receive more or less direct sunlight at different times of year.

We cannot see a new moon in our sky because _________. a new moon is quite near the Sun in the sky it is above the horizon during the daytime no sunlight is illuminating the Moon it is obscured by Earth's shadow

a new moon is quite near the Sun in the sky

Stars that are visible in the local sky on any clear night of the year, at any time of the night, are called _________. Stars that are visible in the local sky on any clear night of the year, at any time of the night, are called _________. circumpolar seasonal celestial bright

circumpolar

Lunar eclipses can occur only during a _________. third quarter moon full moon first quarter moon new moon

full moon

If we have a new moon today, when we will have the next full moon? in about 6 months in about 1 week in about a month in about 2 weeks

in about 2 weeks

During the time that a planet is in its period of apparent retrograde motion, _________. the planet appears to rise in the west and set in the east, rather than the usual rising in the east and setting in the west the planet moves backwards (clockwise as viewed from above Earth's north pole) in its orbit of the Sun over many days or weeks, the planet moves westward relative to the stars, rather than the usual eastward relative to the stars the planet is getting closer to the Sun in its orbit

over many days or weeks, the planet moves westward relative to the stars, rather than the usual eastward relative to the stars

How would a star's parallax change as its distance from Earth increases? The parallax shift decreases as the star's distance from Earth increases. The parallax shift does not change; it is independent of the star's distance from Earth. The parallax shift increases as the star's distance from Earth increases.

parallax decreases as the stars distance from earth increases

If you are located in the Northern Hemisphere, which of the following correctly describes a relationship between the sky and your location? If you are located in the Northern Hemisphere, which of the following correctly describes a relationship between the sky and your location? The altitude of the celestial equator equals your latitude. The altitude of the north celestial pole equals your latitude. The altitude of the north celestial pole equals your longitude. The longitude of the north celestial pole is circumpolar, and therefore crosses your zenith at the meridian.

the altitude of the north celestial pole equals your latitude

What is the ecliptic? the Sun's daily path from east to west in our sky a half-circle extending from your horizon due north, through your zenith, to your horizon due south the path traced by the Moon's shadow on Earth during a solar eclipse the path the Sun appears to trace around the celestial sphere each year

the path the Sun appears to trace around the celestial sphere each year