Astronomy Ch1 Crossword
|
Down:
1) The Moon takes about ____ days to go through whole cycle of phases—2) is plane of Earth’s path around the Sun; at 23.5° to celestial equator3) Time to make full 360° rotation around Earth, ____ is about 2 days shorter
4) When the Moon passes through Earth’s shadow, we see a darkened, copper-colored Moon, 5) Daily cycle, noon to noon, is 7) The Moon is between Earth and the Sun 10) southernmost point of path (below celestial equator) is 13) totality of all space, time, matter, and energy
|
Across:
6) rotation of Earth’s axis itself; makes one complete circle in about 26,000 years
8) follows seasons; sidereal year follows constellations—in 13,000 years July and August will still be summer, but Orion will be a summer constellation9) Stars aren’t in quite the same place 24 hours later, though, due to Earth’s rotation around the Sun; when they are once again in the same place, one ______ has passed
11) Scales are very large: measure in light-years, the distance light travels in a year—about 12) Northernmost point of path (above celestial equator) is 14) Time for Earth to orbit once around the Sun, relative to fixed stars, is 15) Stars seem to be on the inner surface of a sphere surrounding Earth
They aren’t, but can use two-dimensional spherical coordinates (similar to latitude and longitude) to locate sky objects
|
 |
|
|