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Science Space Unit

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  • Why do the sun, other stars, and the moon appear to change positions in the sky?
    The Earth is turning in its rotation
  • What does the Earth's gravity do to all objects?
    pulls all objects to the planet's center
  • Define gravitational force between Earth and the Moon
    The force between Earth and the moon; it keeps the moon moving around the Earth
  • How long is one complete rotation of Earth?
    Earth makes one complete rotation on its axis every 24 hours.
  • True or False: Even stars that are bigger and brighter than the sun are visible only at night
    True
  • Define what a star is
    A star is a ball of hot gases that gives off light and other types of energy
  • Define the gravitational force between the Earth and the Sun
    Gravitational force keeps the Earth revolving around the sun
  • What makes the sun appear larger and brighter than other stars in the sky
    It appears larger and brighter because it is the closest star to Earth
  • Define what revolve means
    To move around other objects
  • Explain how the Earth's rotation can cause day
    The earth rotates on its axis and half of the Earth faces the sun and it is lit by sunlight causing day
  • Explain how the Earth's rotation can cause night
    The earth rotates on its axis and half of the Earth faces away from the sun and it is dark causing night
  • Define what gravity is
    The force that pulls one object toward another object
  • The Earth revolves around......?
    The Earth revolves around sun
  • What makes a skydiver fall to earth?
    gravity pulls the skydiver "down" or toward the Earth's center
  • The sun, Earth, and moon revolve as the result of.......
    gravitational force
  • The moon revolves around the ......?
    The moon revolves around the Earth
  • True or False: Stars range in size an in the amounts of light and energy they give off
    True
  • Do the Earth, Moon and Sun revolve around the center of our galaxy together?
    Yes they do all at the same time
  • Approximately how many hours of day and night do we have?
    Day lasts about 12 hours and so does night
  • Which time period is closer to the scientific meaning of a day?
    The time period between sunrise and sunset
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