Galaxies and Stars

What are the the 3 types of galaxies?

• Spiral Galaxies, Regular Galaxies, and Lliptical Galaxies

• Spiral Galaxies, Irregular Galaxies, and Elliptical Galaxies

• Milky Way, Elliptical Galaxies, and Spiral Galaxies

• Milky Way, Elliptical Galaxies, and Irregular Galaxies

Place these objects in order from smallest to largest.

• Planets, solar system, universe, galaxy

• Solar system, planets, galaxy, universe

• Planets, solar system, galaxy, universe

• Galaxy, solar system, planets, universe

Tags

NGSS.MS-ESS1-3

How many stars are in a galaxy.

• millions or billions
• thousands
• hundreds
• Ten

Tags

NGSS.MS-ESS1-2

What color of star is the hottest?

• Blue
• Red
• Yellow
• Orange

What color of star is the coolest?

• Red
• Yellow
• Blue
• White

The color of the star tells us its 

• composition
• Temperature
• Luminosity 
• Mass

A Hertzsprung-Russell diagram (H-R diagram) is used to…

• classify stars by temperature and brightness

• illustrate various wavelengths of light

• show the distances between stars

• differentiate between stars and planets

What word best describes our sun?

• Average

• Supergiant

• Dwarf

• Red Giant

Tags

NGSS.MS-ESS1-1

True or False
The Sun is the biggest star in the sky.

• True
• False

Tags

NGSS.5-ESS1-1

Why do other stars appear so much smaller than the sun?

• They are much smaller
• They are so far away
• They are not as bright
• They are dwarf stars