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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?

$1.50 \times 10^{11}$ Signup and view all the answers

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

$6.3 \times 10^8$ Signup and view all the answers

How much does a human weigh in kilograms approximately?

~$10^2$ Signup and view all the answers

What is the approximate period of visible light waves?

$10^{-15}$ s Signup and view all the answers

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

Air at atmospheric pressure Signup and view all the answers

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

70 breaths/min 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?

$10^{-24}$ s Signup and view all the answers

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

$7.36 \times 10^{22}$ kg Signup and view all the answers

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

$9.80$ m/s^2 Signup and view all the answers