Astronomy Test #2 Review

As gravity pulls gas and dust into a sphere that becomes denser and hotter, and fusion begins, it is called a(n)

• white dwarf

• red dwarf

• supergiant

• protostar

What color are the hottest stars?

• red
• yellow
• orange
• blue

Tags

NGSS.HS-PS4-3

Our sun is an average _____________________________ star

• main sequence

• white dwarf

• red giant

• supernova

Which has the LONGEST wavelength and, therefore, the lowest frequency/energy

• Gamma Rays

• Radio Waves

• Visible Light

• Infrared rays

In the diagram given, what happens as we move to the left?

• Stars Get Larger
• Stars get Colder
• Stars get Hotter
• Stars get Brighter

Look at the H-R diagram. Which star is

cool, dim, and red?

• Betelguse

• Sirius B

• Procyon B

• Barnard's star

Our sun is in a spiral shaped galaxy located at which position?

• A

• B

• C

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular 
• Irrational

What type of galaxy is shown in this image?

• Spiral
• Elliptical
• Irregular
• Irrational

Stars are formed in a cloud of gas and dust called a - 

• nebula
• black hole
• white dwarf
• Super Giant