Astronomical Distances Quiz
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Questions and Answers

What is the distance from the Earth to the nearest large galaxy, M 31 (the Andromeda galaxy), in meters?

  • $9.46 \times 10^{15}$
  • $4 \times 10^{16}$
  • $3.84 \times 10^{8}$
  • $2 \times 10^{22}$ (correct)

What is the mean distance from the Earth to the Moon in meters?

  • $1.50 \times 10^{11}$
  • $7.36 \times 10^{22}$
  • $2 \times 10^{5}$
  • $3.84 \times 10^{8}$ (correct)

What is the size of the smallest dust particles in meters?

  • ~$10^{-4}$ (correct)
  • ~$10^{-14}$
  • ~$1 \times 10^{-15}$
  • ~$10^{-5}$

How far is the mean orbit radius of the Earth about the Sun in meters?

<p>$1.50 \times 10^{11}$ (C)</p> Signup and view all the answers

What is the average age of a college student in seconds?

<p>$6.3 \times 10^8$ (B)</p> Signup and view all the answers

How much does a human weigh in kilograms approximately?

<p>~$10^2$ (D)</p> Signup and view all the answers

What is the approximate period of visible light waves?

<p>$10^{-15}$ s (A)</p> Signup and view all the answers

Which material has a density closest to that of the Earth's atmosphere at standard atmospheric pressure?

<p>Air at atmospheric pressure (B)</p> Signup and view all the answers

What is the average number of breaths that a person takes in 1 minute?

<p>70 breaths/min (B)</p> Signup and view all the answers

If the duration of a nuclear collision is $10^{-22}$ seconds, what is the time interval for light to cross a proton?

<p>$10^{-24}$ s (A)</p> Signup and view all the answers

What is the mass of the Moon compared to the mass of the Earth?

<p>$7.36 \times 10^{22}$ kg (D)</p> Signup and view all the answers

What is the free-fall acceleration on Earth (in m/s^2)?

<p>$9.80$ m/s^2 (B)</p> Signup and view all the answers

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