Astro 1500 Exam 1 Review

Astro 1500 Exam 1 Review

University

30 Qs

quiz-placeholder

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Astro 1500 Exam 1 Review

Astro 1500 Exam 1 Review

Assessment

Quiz

Physics

University

Practice Problem

Easy

NGSS
HS-PS4-3, HS-PS4-1, HS-PS4-4

+7

Standards-aligned

Created by

Amanda Weinstein

Used 2+ times

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30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The sun is 8 light-minutes away from us. If the sun were to suddenly go dark, how long would it take for us to notice?

We would immediately notice

15 seconds

8 minutes

1-2 years

Answer explanation

The sun is 8 light minutes away, so it would take 8 minutes for the light (or lack of light) to reach us.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Why can't we make out stars from other galaxies without using advanced machinery like telescopes?

They are redshifted out of the visible range

They're a bit shy

We can actually see individual stars from other galaxies

They are too far away, making them either too dim, or too close together to see

Answer explanation

Our eyes do not have the light gathering or angular resolution of a good telescope

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The ISS orbits because...

It floats on top of the clouds

It's moving sideways quickly enough that it 'misses' the ground

Thrusters onboard constantly boost it upwards

It is completely outside of the earth's gravitational influence

Answer explanation

All an orbit is, is throwing something sideways with enough velocity that when it would hit the ground, it has moved enough that the ground bends away from it (because earth is a sphere).

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The luminosity of a star depends on (among other things) ...

It's temperature

How far away it is from us

How many planets it has

Whether it's moving towards or away from us

Answer explanation

Luminosity depends on only the temperature and radius of the star. Both properties intrinsic to the star.

Tags

NGSS.HS-ESS1-1

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A star's brightness depends on (among other things) ...

It's metallicity (how much metal is in the star)

How far away it is from us

How many planets it has

Whether it's moving towards or away from us

Answer explanation

Brightness, unlike luminosity depends on how far away the star is from us

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

In general, red stars are ____ than blue stars.

Hotter

Colder

Closer

Farther

Answer explanation

Color can be an allegory for temperature. Blue stars are hotter than red stars.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Jupiter orbits at a distance of roughly 5 AU from the sun, how long is a year on Jupiter (in earth years)?

1 earth year

3 earth years

5 earth years

11 earth years

Answer explanation

Show on board

Tags

NGSS.HS-ESS1-4

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