Quiz (HW#10) 7th Grade

Which statement describes the general relationship between the temperature and the luminosity of main sequence stars?

• As temperature decreases, luminosity increases.

• As temperature decreases, luminosity remains the same.

• As temperature increases, luminosity increases.

• As temperature, luminosity remains the same.

Which of the following statements is NOT true regarding main sequence stars?

• Red giant stars are part of the main sequence group.

• Most stars visible from Earth are main sequence stars.

• As surface temperature increases, absolute brightness increases.

• Main sequence stars are primarily composed of hydrogen and helium gas.

As a whole, Giants are considered hotter than White Dwarfs.

• True
• False

Which category is our Sun located in?

• White Dwarfs
• Supergiants
• Main Sequence
• Giants

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

• Temperature
• Luminosity or Brightness

Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?

• Betelguse
• Sirius B
• Procyon B
• Barnard's star

What is the difference between a gibbous moon and a crescent moon?

• The gibbous shows more than half of the bright side of the moon.
• The crescent shows more than half of the bright side of the moon.
• The gibbous shows less than half of the bright side of the moon. 
• There is no difference

The cycle of the moon lasts about a _.

• day
• year
• week
• month

How many phases does the moon go through?

• 4
• 8
• 10
• 16

What Moon phase is this?

• Waxing Crescent
• Waning Gibbous
• Waning Crescent
• Waxing Gibbous