Wednesday, October 7, 2009

Astronomy

1 Stars and constellations appear in the same place in the sky every night.
2 The sun rises exactly in the east and sets exactly in the west every day.
3 The sun is always directly south at 12:00 noon.
4 The tip of a shadow always moves along an east-west line.
5 We experience seasons because of the earth's changing distance from the sun (closer in the summer, farther in the winter).
6 The earth is the center of the solar system. (The planets, sun and moon revolve around the earth.)
7 The moon can only be seen during the night.
8 The moon does not rotate on its axis as it revolves around the earth.
9 The phases of the moon are caused by shadows cast on its surface by other objects in the solar system.
10 The phases of the moon are caused by the shadow of the earth on the moon.
11 The phases of the moon are caused by the moon moving into the sun's shadow.
12 The shape of the moon always appears the same.
13 The earth is the largest object in the solar system.
14 The solar system is very crowded.
15 The solar system contains only the sun, planets and the moon.
Meteors are falling stars.
16 Comets and meteors are out in space and do not reach the ground.
17 The surface of the sun is without visible features.
18 All the stars in a constellation are near each other.
19 All the stars are the same distance from the earth.
20 The galaxy is very crowded.
21 Stars are evenly distributed throughout the universe.
22 All stars are the same size.
23 The brightness of a star depends only on its distance from the earth.
24 Stars are evenly distributed throughout the galaxy.
25 The constellations form patterns clearly resembling people, animals or objects.

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