universe

According to this Hertzsprung-Russell Diagram which stars are brightest?

• Purple
• Red
• Blue
• Yellow

Hertzsprung-Russell Diagram shows the correct order of decreasing surface temp for stars is?

• Red, Yellow, White, Blue
• Red, Yellow, Red, Yellow
• Blue, White, Yellow, Red
• Blue, Red, White, Yellow

The shape of our Milky Way galaxy can be classified as ____________.

• Spiral
• Elliptical
• Irregular
• French

The Sun's position in the Milky Way galaxy is on the _______ of a spiral away from the center.Skip
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• Center
• Edge
• Middle
• Outside

Huge clouds of dust and gas are called

• Star
• Nebulae
• Neutron Star
• Comets

What is a light year?

• A unit of time
• The time light takes to travel though a vacuum in one year.
• 10 thousand meters
• How far light travels through the vacuum in one year.

Our Sun is a ______________ star.

• Blue 
• Main Sequence
• Yellow
• Orange

The stars with the lowest temperature are ________________.

• Orange
• Red
• Blue
• White

Luminosity measures a star's _____________________.

• Color
• Temperature
• Brightness

What information can the Electromagnetic Spectrum help you obtain from stars?

• Distance
• Temperature
• Chemical Composition
• All of them.