8th Grade - Stars, HR Diagrams and Galaxies

Label the characteristics of stars in each area of the HR Diagram.

a

b

c

d

Hot, Bright

Hot, Dim

Cool, Dim

Cool, Bright

Tags

NGSS.HS-ESS1-3

A star that has a luminosity of 10^-2 and a temperature of 20,000 K is most likely a...?

• Main Sequence

• White Dwarf

• Blue Giant

• Red Giant

Tags

NGSS.HS-ESS1-3

Based on the HR Diagram, which star is most like the sun?

• Star 1

• Star 2

• Star 3

• Star 4

Which statement best describes the location of the sun in the Milky Way galaxy?

• The sun is located in the center of a spiral-shaped galxy.

• The sun is located off the center of an elliptical-shaped galaxy.

• The sun is located on an arm of a spiral-shaped galaxy.

• The sun is located on an arm of an elliptical-shaped galaxy.

Place the stages of an average star (like the sun) in order.

• Main Sequence Star

• Stellar Nebula

• White Dwarf

• Planetary Nebula

• Red Giant

Match the following words with the correct definition.

• An astronomical event that occurs during the last stages of a massive star's life

• Nebula

• A small, dense star that is the remnants of a low-mass star

• Supernova

• A star that has collapsed under its own gravity

• White Dwarf

• A giant cloud of dust and gas in space

• Black Hole

• A region of space having a gravitational field so intense that no matter or radiation can escape

• Neutron Star

What decides the life stages of a star?

• Luminosity

• Spectral Class

• Mass

• Temperature

Tags

NGSS.HS-ESS1-1

What type of star will die the fastest (a)  

• Medium Mass
• Low Mass
• High Mass 

As surface temperature increases, what else changes?

• Luminosity

• Spectral Class

• Mass

Match the following

• elliptical galaxy

• bulge in center with extending arms

• spiral galaxy

• no shape

• irregular galaxy

• spherical