Astronomy in questions and answers
astronomy in questions and answers
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The Earth
1.  What is the Earth?
2.  How big is the Earth?
3.  When do we have night and day?
4.  How fast does the Earth travel around the Sun?
5.  What seasons does the Earth have?
6.  Does the Earth have seasons at the North and South poles?
7.  Are summers warmer in the Southern than in the Northern Hemisphere?
8.  Where is the International Date Line?
9.  What causes tides?
10. Do the tides affect the motion of the Earth?
11. What effect does the Sun have upon the tides?
12. Has the Sun or the Moon the greater tidal effect upon the Earth?
night and day
See also
• The Sun
• The Moon
• Mercury, Venus and Mars
• Jupiter, Saturn, Uranus, Neptune and Pluto
• Meteors and Comets
• Stars
• The Constellations
• Galaxies
• Scientists and Astronomers
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