![]() As the Earth rotates, different places on Earth experience sunset and sunrise at a different time. Since the Earth completes one rotation in about 24 hours, this is the time it takes to complete one day-night cycle. ![]() As Earth rotates, the side of Earth facing the Sun experiences daylight, and the opposite side (facing away from the Sun) experiences darkness or nighttime. Earth’s Day and NightĪnother effect of Earth’s rotation is that we have a cycle of daylight and darkness approximately every 24 hours. As Earth turns, the Moon and stars change position in our sky. Earth’s rotation is also responsible for this. When we look at the Moon or the stars at night, they also seem to rise in the east and set in the west. We often say that the Sun is “rising” or “setting”, but actually it is the Earth’s rotation that gives us the perception of the Sun rising up or setting over the horizon. As the Earth rotates, observers on Earth see the Sun moving across the sky from east to west with the beginning of each new day. If you were to look at Earth from the North Pole, it would be spinning counterclockwise. The Earth rotates once on its axis about every 24 hours. Explain how movements of the Earth and Moon affect Earth’s tides.Įarlier we discussed Earth’s rotation and revolution.Describe the phases of the Moon and explain why they occur. ![]()
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