Practice Quiz

NAEP Science Grade 12 - Question List

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106.
Two high tides occur almost simultaneously on opposite sides of Earth. Which of the following best describes the underlying reason that a high tide occurs on the side of Earth that faces away from the Moon?
  1. The difference in the gravitational pull on either side of Earth.
  2. The drag caused by frictional forces between water and the ocean floor.
  3. The strength of the Sun's gravitational pull on ocean water.
  4. The tilt of Earth's axis relative to the Moon's orbit.
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107.
Which of the following explains why lunar eclipses typically occur only two or three times a year instead of each month?
  1. Earth's axis is tilted relative to the plane of its orbital path around the Sun.
  2. The time it takes Earth to orbit the Sun is much longer than the orbital period of the Moon.
  3. The Moon's orbital path is tilted relative to the plane of Earth solar orbit.
  4. The time it takes for the Moon to orbit Earth is much longer than Earth's rotational period.
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108.
The energy output of the Sun is maintained by which of the following processes?
  1. The conversion of hydrogen into helium in the core.
  2. The combustion of gases drawn into the chromosphere.
  3. The explosion of volatile compounds in the corona.
  4. The breakdown of high-energy particles in the photosphere.
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109.
Scientists believe that the asteroids of the asteroid belt formed when:
  1. Debris from outside the solar system was captured by the Sun's gravity.
  2. Fragments of planetesimals failed to coalesce into one or more planets.
  3. Several moons orbiting Jupiter were destroyed by meteor impacts.
  4. Dust and ice in the early solar system clumped together.
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110.
The Oort cloud is a region in space that scientists have determined is:
  1. The source of most comets.
  2. An area where new stars form.
  3. The location of the asteroid belt.
  4. An area where a supernova occurred.
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