LCOS and HR Diagram

What 2 things are measured on the HR Diagram?

• temperature only

• dim and temperature

• brightness and temperature

• mass and temperature

When the most massive stars die they may become what?

• black hole

• nothing

• nebula

• supernova

What star do we compare all other stars to?

• white dwarf

• sun

• protostar

• nebula

Tags

NGSS.HS-ESS1-1

This is a picture of dust and gas that is getting compressed by gravity, which stage of the life cycle of a star is this?

• Black Hole

• Main Sequence

• Nebula

• Protostar

The sun is classified as what stage in the Life Cycle of a star?

• Nebula

• Protostar

• Main Sequence

• Red Giant

White Dwarf stars are considered?

• Bright, but Hot

• Hot, but Dim

• Small, but Bright

• Large, but dim

Two stars are identified on the Hertzsprung-Russell diagram. Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?

• Star 1 is cooler and less bright than Star 2

• Star 1 is hotter and brighter than Star 2

• Star 1 is cooler and brighter than Star 2

• Star 1 is hotter and less bright than Star 2

All stars begin their life as a

• Main Sequence

• Nebula

• Protostar

• Black Dwarf

Tags

NGSS.HS-ESS1-3

A gigantic explosion that causes the death of a large star is called

• pulsar
• red giant 
• supernova
• black hole

The stage after the main sequence star:

• red giant

• nebula

• white dwarf

• black dwarf