Understanding Stars

What does luminosity refer to?

• The color of a star

• The distance of a star from Earth

• The brightness of a star

• The size of a star

What is Absolute Brightness?

• The temperature of a star

• The color of a star

• The brightness of a star at a distance of 10 parsecs

• The brightness of a star as seen from Earth

What is Apparent Brightness/Magnitude?

• The temperature of a star

• The color of a star

• The brightness of a star at a distance of 10 parsecs

• The brightness of a star as seen from Earth

Tags

NGSS.HS-PS4-3

How far is 10 parsecs in light years?

• Approx. 33 light years

• Approx. 20 light years

• Approx. 50 light years

• Approx. 10 light years

Tags

NGSS.MS-ESS1-3

What does the color of a star indicate?

• Its surface temperature

• Its age

• Its size

• Its distance from Earth

What is the Hertzsprung-Russell Diagram used for?

• Relating the surface temperatures and absolute brightness of stars

• Mapping the distance of stars from Earth

• Mapping the size of stars

• Relating the color and size of stars

Place the color of stars from HOTTEST to COLDEST.

• Yellow

• Orange

• Red

• Blue

• White

Correctly label the missing origins of the Hertzsprung-Russell diagram.

a

b

Luminosity (L)

Temperature (K)

Tags

NGSS.HS-ESS1-3