Practice Quiz

NAEP Science Grade 12

Category - Science

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As observed with special instruments from Earth, the Sun appears in the sky to be slightly larger in January than in July. Which of the following accounts for this observation?
  1. The Earth moves in an orbit that is not circular but is closer to the Sun in January than in July.
  2. The diameter of the Earth is not constant, but bulges slightly at the Equator and contracts slightly during the winter.
  3. The Earth's orbit is not in the same plane as the orbits of the other planets.
  4. The axis of rotation of the Earth is not perpendicular to the plane of its orbit but instead is tilted at an angle.
Explanation
Answer: A - The Earth moves in an orbit that is not circular but is closer to the Sun in January than in July.
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