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NY Regents Earth and Space Sciences Science — practice by topic

Browse 43 questions across 2 Science topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Science topics

Earth, Moon, and Sky (22)Radiation and Spectra (21)

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The familiar cycle of the seasons on Earth is produced by a tilt of what size?Read the answer and worked solution →The Moon does not shine under its own power. Where does the light we see from it come from?Read the answer and worked solution →A solar eclipse can only happen while the Moon is in which phase?Read the answer and worked solution →Which band of the electromagnetic spectrum holds the shortest wavelengths of all?Read the answer and worked solution →

Worked practice questions

The familiar cycle of the seasons on Earth is produced by a tilt of what size?

  1. A tilt of 23.5 degrees
  2. A tilt of 45.0 degrees
  3. A tilt of 11.5 degrees
  4. A tilt of 90.0 degrees
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Correct answer: A. A tilt of 23.5 degrees

1. Earth spins on an axis that is not upright with respect to its orbit. 2. That axis leans by 23.5 degrees, and it keeps pointing the same way all year. 3. The lean is what swings sunlight between the hemispheres, so it is the cause of the seasons. _Source: OpenStax Astronomy (CC BY 4.0), Ch 4 "Earth, Moon, and Sky" and Ch 5 "Radiation and Spectra", section 4.2 The Seasons_

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The Moon does not shine under its own power. Where does the light we see from it come from?

  1. Burning surface rock
  2. Reflected sunlight
  3. Heat from Earth
  4. Its own hot core
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Correct answer: B. Reflected sunlight

1. A body can either make its own light or bounce someone else's light back at us. 2. The Moon merely glows with reflected sunlight, so it belongs in the second group. 3. Its rocky surface gives off no light of its own, which is why the new moon is invisible. _Source: OpenStax Astronomy (CC BY 4.0), Ch 4 "Earth, Moon, and Sky" and Ch 5 "Radiation and Spectra", section 4.5 Phases and Motions of the Moon_

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A solar eclipse can only happen while the Moon is in which phase?

  1. The full moon
  2. First quarter
  3. The new moon
  4. Third quarter
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Correct answer: C. The new moon

1. A solar eclipse needs the Moon to pass in front of the Sun. 2. The Moon sits in the same direction as the Sun only at new moon. 3. Solar eclipses can therefore occur only at the time of the new moon. 4. At full moon the Moon is opposite the Sun, which is the setup for a lunar eclipse instead. _Source: OpenStax Astronomy (CC BY 4.0), Ch 4 "Earth, Moon, and Sky" and Ch 5 "Radiation and Spectra", section 4.7 Eclipses of the Sun and Moon_

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