Why Do We Have Time Zones?
Why Do We Have Time Zones? Time is not same everywhere. When it is noon in New York, for example, it is still 9 a.m. in San Francisco. The sun seems to move across the...
Read MoreWhy Do We Have Time Zones? Time is not same everywhere. When it is noon in New York, for example, it is still 9 a.m. in San Francisco. The sun seems to move across the...
Read MoreHow Long Do Animals Live? The lives of animals range from several hours to many years. An adult mayfly lives only a few hours. The giant tortoise may live more than 150...
Read MoreWhales don’t sleep at night as you do. They sleep by taking “half naps” at the water surface for a few minutes at a time when they are tired. Whales seem to be...
Read More“A.M.” and “P.M.” are the expressions we use to indicate before noon and after noon. They are abbreviations for “ante meridiem” and “post meridiem.” In timekeeping, the...
Read MoreWhy Is It Hotter in Summer than in Winter? During the summer, the sun shines most directly on the earth, bringing more heat. The earth tilts, or tips, a little to one...
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