Do Now - 11/13 - H-R and Life Cycle

About 90 percent of stars on the H-R diagram are ____ stars.

• red giant
• main sequence
• luminosity
• supergiants

Tags

NGSS.HS-ESS1-3

Why are the hottest stars blue?

• They emit the lowest frequency wave, meaning the most energy.

• They emit the highest frequency wave, meaning the most energy.

• They emit a longer wavelength which gives it more energy.

• Blue waves have the lowest energy on the visible spectrum.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What is the relationship between the size of a star and the luminosity (brightness)?

• They are inversely proportional. The higher the luminosity the smaller the size.

• They are directly proportional. The lower the brightness, the larger the size.

• They are inversely proportional. The higher the luminosity, the larger the size.

• They are directly proportional. The larger the size, the higher the luminosity.

Which star has the lowest temperature?

• A
• B
• C
• D

Which star has the highest surface temperature?

• Betelgeuse
• our Sun
• Vega
• Sirius B

Tags

NGSS.HS-ESS1-3

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

• Stars Get Larger
• Stars get Colder
• Stars get hotter

What is the fuel source of the sun?

• Hydrogen

• Oxygen

• Water

• Helium

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Match the following

• expanding shell of gas of a red giant

• planetary nebula

• interstellar cloud of dust

• supernova

• Remains of a white dwarf that cooled

• nebula

• core of the planetary nebula

• black dwarf

• explosion of a massive star

• white dwarf

Tags

NGSS.HS-ESS1-3