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Unit 4, Lesson 1-3 Science Test Practice

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  • What color is the hottest star?
    blue
  • In which direction does gravity pull?
    toward the center of the earth.
  • What is the order of planets starting with the shortest distance from the sun to the furthest?
    Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
  • What causes night and day?
    The rotation of Earth on its axis.
  • Why does the sun look brighter than other stars?
    It is closer to the earth
  • How long does it take for the earth to make a complete rotation?
    24 hours
  • The Earth orbits the _______.
    sun
  • A leftover chunk of material that has hit the ground, can be as small as grains of sand. (rite rhymes with might)
    Meteorite ( it's rare, but you Might find a meteoRite on earth)
  • What color star is the sun?
    Yellow
  • How many time zones are in the US?
    6
  • The streak of light that a falling meteoroid produces. (think ______shower)
    Meteor (think meteor shower)
  • How much less would you weigh on the moon than on the Earth?
    ⅙ as much
  • How long does it take for the earth to make one revolution?
    365.25 days
  • Which season has the fewest hours of daylight?
    winter
  • The sun rises in the ________, and sets in the _______.
    East-West (think sets rhymes with west)
  • What has gravity?
    Everything made of matter including people, planets, stars, buildings, tiny pebbles,...
  • How many times bigger is the sun than Earth?
    one million times bigger
  • What 3 factors affect a star's apparent brightness?
    distance, size, temperature
  • Stars produce bright light because they are very ____.
    hot
  • Stronger objects have ________ gravity. (weaker or stronger)
    stronger
  • What keeps objects in orbit?
    Gravity ( keeps the Moon orbiting Earth and the planets orbiting the Sun)
  • Where is gravity strongest on Earth?
    At sea level because that is close to Earth’s surface
  • A chunk of rock, floating in space is called a _________. (Think roid rhymes with void)
    Meteoroid (void is a synonym for space)
  • How far away is the sun from the earth?
    8 light minutes
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