Saturday, January 17, 2009

The 3rd week, Jan-What causes day and night?


Earth rotates toward the east. This causes the Sun to appear to rise in the eastern sky, move across the sky from east to west, and appear to set in the western sky.

Younger children do not iunderstand that Earth's rotation cause night and day. Their common experiences tell them that the Sun, the Moon, and stars seem to ove around Earth. It is difficult to change their perceptions.

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