How Did the First Clocks Work?
How Did the First Clocks Work? The earliest known clocks are sundials. In the ruins of Egypt, a giant sundial, almost 100 feet tall, has bee
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How Can You Tell What Time It Is by Looking at the Sun?
How Can You Tell What Time It Is by Looking at the Sun? We know that the Sun moves across the sky during the day. Probably the simplest way
What Causes Weather?
What Causes Weather? Most weather phenomena occur in the troposphere, just below the stratosphere. Weather refers to day-to-day temperature
How Did Ancient Civilizations Record Time?
How Did Ancient Civilizations Record Time? After the Sumerians, the Egyptians were the next to formally divide their day into parts somethin
Why Do We Have Daylight Saving Time?
Why Do We Have Daylight Saving Time? During summer, most people in the United States set their clocks one hour ahead of standard time. Dayli