Components of the Universe + HR Diagram Notes Quizizz

​1. Journal
2. Chromebook
3. Open to yesterday's notes -->

​Do Now:

Reorder

Order the components of the universe from LARGEST (top) to SMALLEST (bottom!

• Universe

• Galaxy

• Nebula

• Solar System

• Star

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

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What are some of the things (components) we can find in space (the universe)?

Match

Match the following components to the correct description

• Asteroid

• Comet

• Meteor

• Meteorite

a small rock found in asteroid belt

frozen balls of gas, dust, and rock

rock that entered Earth's atmosphere

piece of meteor that reached ground

• a small rock found in asteroid belt

• frozen balls of gas, dust, and rock

• rock that entered Earth's atmosphere

• piece of meteor that reached ground

Match

Match the following components to the right description

• Nebula

• Universe

• Galaxy

• Stars

cloud of gas, birthplace of stars

all existing matter in space

billions of stars, gas, & dust together

large ball of burning gas

• cloud of gas, birthplace of stars

• all existing matter in space

• billions of stars, gas, & dust together

• large ball of burning gas

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Multiple Select

What are the different types of galaxies? Select ALL that are correct.

• Spiral

• Irregular

• Regular

• Elliptical

• Synthetic

Multiple Choice

What type of galaxy do we live in?

• Spiral

• Elliptical

• Irregular

Multiple Choice

What is the force that keeps things in orbit and holds galaxies together?

• Inertia

• Gravity

• Magnetism

• Convection

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Match

Match the following vocab to the correct definition:

• Luminosity

• Spectral Class

• Absolute Magnitude

• Main Sequence

star's brightness

stars classified by spectrum.

how bright a star looks due to distance

category most stars belong to

• star's brightness

• stars classified by spectrum.

• how bright a star looks due to distance

• category most stars belong to

Multiple Choice

Why does our star appear brighter than all other stars?

• Because it IS the brightest

• Because its hottest

• Because its closest

• Because its radioactive

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1. What is the luminosity of Mira?

2. What is the Spectral Class of Sirius B?

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​HR diagram:

Multiple Choice

What is the luminosity of Betelgeuse?

• 10^4

• 10^5

• 10^3

• 6

Multiple Choice

What is the spectral class of RR Lyrae?

• G0

• 10

• 0

• 6800

Multiple Choice

What is the magnitude of Regulus?

• A0

• 10

• 0

• 15,000

Multiple Choice

What is the temperature of Rigel?

• F0

• 10^4

• -7

• 10,000

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Multiple Choice

If I wanted to observe gamma rays, what kind of telescope would I need?

• Radio Telescope

• Infrared Telescope

• Gamma Telescope

• UV Telescope