1)People in early civilizations (140 A.D.) believed that __________________ was the center of the universe.
2) Why do the Moon and Sun appear to be the same size from Earth?
3) List two different things the Earth's atmosphere protects us from.
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2006-11-01 13:58:05 · 3 answers · asked by C.J. W 3 in Science & Mathematics ➔ Astronomy & Space
4) What is the difference between mass and weight?
5) If the sun lost its gravitational pull on the Earth, what would happen to the motion of the Earth?
2006-11-01 14:53:21 · update #1
1- yup, Earth
2 - The sun is about 400 times the diameter of the moon, but is also about 400 times farther away
3 - Cosmic rays ( a form of electromagnetic energy that would sterilize the surface of our planet within a few months if not blocked ), and meteors, thousands of which would hit us every hour.
2006-11-01 14:24:11 · answer #1 · answered by Gary H 6 · 0⤊ 0⤋
1 The Earth
2 The Sun is enormous and further away than the Moon, the Moon is much smaller than Earth and is closer than the Sun
3 Solar radiation and meteors
2006-11-01 22:02:44 · answer #2 · answered by roamin70 4 · 1⤊ 0⤋
1. earth. 2. the sun is bigger but farther away. 3. the atmosphere protects us from freezing and suffocating.
2006-11-01 22:06:51 · answer #3 · answered by IfULookdAzGudAzMeUdBeatOffALot2 1 · 0⤊ 1⤋