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The Cycle of Day and Night

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  • Why do we have a day that is 24 hours long?
    It takes 24 hours for the Earth to rotate once.
  • Earth rotates once every 24 hours. What would happen if Earth rotated faster?
    Each day would be shorter
  • Rotation of Earth on its axis causes ___________.
    day and night
  • What would happen if Earth took longer than 24 hours to rotate on its axis?
    As Earth spins slower, the length of one cycle of day and night will increase.
  • What idea does this picture illustrate?
    The side of the earth that is facing the sun experiences daytime while the side of the Earth facing away from the sun experiences nighttime.
  • An imaginary line that runs through Earth from the South Pole to the North Pole
    axis
  • What term does this picture illustrate?
    revolution
  • What are the names of the planets in order from their distance from the sun?
    Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
  • The orbiting of an object around another object
    revolution
  • A process that repeats
    cycle
  • True or False: When we experience daytime, our part of Earth is facing the sun.
    True
  • True or False: Earth’s revolution around the Sun is what gives us day and night.
    False
  • The spinning of a celestial body, such as a planet, around an axis
    rotation
  • What term does this picture illustrate?
    rotation
  • True or False: The sun and stars move in the solar system.
    False
  • True or False: The sun rises in the east and sets in the west.
    True