Light Spectra and what it can tell us

What is the correct order of the visible light spectrum starting with the longer wavelength?

• Red, yellow, orange, blue, violet, indigo

• Violet, indigo, blue, green, yellow, orange, red

• Green, yellow, blue, indigo, red, orange

• Red, orange, yellow, green, blue, indigo, violet

Tags

NGSS.HS-PS4-1

Which color has the longest wavelength?

• Yellow

• Red

• Green

• Purple

Tags

NGSS.HS-PS4-1

What gases are in the unknown mixture?

• Gas B & Gas D
• Gas C & Gas B
• Gas A & Gas D
• Gas D & Gas C

What is found on the x axis of an H-R diagram?

• Luminosity
  (or brightness)
• Temperature
• Star Size
• Distance

What is found on the Y axis of an H-R diagram

• Luminosity

  (or brightness)

• Temperature

• Star Size

• Distance

The luminosity value is assigned to a star based on...

• How hot it is

• Relative brightness compared to our Sun

• Distance from Earth

• Relative Temperature compared to our Sun

Which category is our Sun located in?

• White Dwarfs

• Supergiants

• Main Sequence

• Giants

Compared to the rest of the stars, our sun is considered...

• Extremely Large and Cold

• Small with a medium temperature

• Medium size with medium temperature

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

• True
• False

What effect does fast rotational velocity of a star have on the spectrum produced?

• The Spectra is spread out

• The Spectra is narrower

• The Spectra is blurred

• The Spectra is shifted toward the red end of the spectrum