Star 2023

Which star has the lowest temperature?

• A
• B
• C
• D

Which spectral class does our star, the sun, belong to?

• M
• K
• G
• F

As you move from the bottom to the top of the H R diagram the __________ changes.

• Temperature
• Luminosity or Brightness

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

• Stars Get larger
• Stars get colder
• Stars get hotter
• Stars get brighter

Which star is the coldest?

• Yellow Star
• Red Star
• Orange Star
• Blue Star

Which of these stars is hottest?

• Red Star
• Yellow Star
• Orange Star
• Blue Star

Red stars are the _____________.

• hottest
• coolest
• biggest

Two stars have the same absolute magnitude. Why does one appear brighter than the other?

• one is closer to Earth so it appears brighter
• they are the same distance from Earth so they have the same absolute magnitude
• the one that appears brighter is not covered by clouds
• one is farther away from Earth so it appears brighter

Approximately what is our sun's absolute magnitude?

• 0

• 1

• 4.5

• -4.5

measures how bright a star would be in relation to the sun if all stars were the same distance from the observer

• Brightness
• Luminosity
• Apparent Magnitude
• Photic Strength