The Universe 8th Grade

The light of Proxima Centaury takes 4.3 years to reach Earth.  What does it mean?

• The star is 4.3  miles from Earth
• The star is 4.3 light years from the  Earth
• The star is 43.000.0000.000. light years fromm the  Earth
• The  star is  4.3 km  from the Earth

Which section of the spectrum is the ONLY one we can see?

• X-rays
• Visible Light
• Gamma Rays
• Ultraviolet Rays

Our galaxy is a ________ galaxy.

• Irregular
• Elliptical
• Spiral
• Twirl

The blue section of the wave is measuring _________________.

• wavelength
• crest
• trough
• amplitude 

Look at the H-R Diagram. Where is Pollux?

• In the main sequence
• with the Super Giants
• with the Giants
• with the White Dwarfs

Look at the H-R Diagram. Where is Polaris?

• In the main sequence
• with the Super Giants
• with the Giants
• with the White Dwarfs

Red stars are the _____________.

• hottest
• coolest
• biggest

Blue stars are the _____________.

• hottest
• coolest
• smallest

Which one is the correct order from hottest to coolest stars?

• blue, yellow,orange, red
• red, orange, yellow, blue
• blue, red, yellow, orange
• yellow, blue, orange, red

How many stars are between the Earth and the Sun?

• 67
• 99,345
• 0
• 34