Recent Lessons

Show all results for ""

Astronomical Distances Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Download our mobile app to listen on the go

Get App

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?

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

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

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

How much does a human weigh in kilograms approximately?

~$10^2$ (D) Signup and view all the answers

What is the approximate period of visible light waves?

$10^{-15}$ s (A) 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 (B) Signup and view all the answers

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

70 breaths/min (B) 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 (A) 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 (D) Signup and view all the answers

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

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

Flashcards are hidden until you start studying