Unit 7 (Life Cycle of a Star, Characteristics of Stars, HR Diag)

What percentage of stars are in the Main Sequence stage of their life cycle?

• 50%

• 70%

• 90%

• 100%

What is a nebula primarily composed of?

• Oxygen and Nitrogen gas

• Gas and Dust

• Rock and Metal

• Ice and Dust

What is the stage called when a small to medium mass star's fuel begins to run out after the main sequence?

• Red Giant

• Planetary Nebula

• White Dwarf

• Black Dwarf

What determines a star's life cycle?

• Its color

• Its mass

• Its temperature

• Its distance from Earth

Tags

NGSS.HS-ESS1-1

Which stage comes after the Red Supergiant in the life cycle of high-mass stars?

• White Dwarf

• Supernova

• Planetary Nebula

• Protostar

What is the next stage after a nebula in the star life cycle?

• Red Giant

• Protostar

• Black Hole

• Neutron Star

What does the HR Diagram graph?

• A star's brightness and temperature

• A planet's orbit and size

• A galaxy's shape and color

• A comet's speed and distance

In the HR Diagram, how does temperature change as you move across the chart?

• Increases as you move to the left

• Decreases as you move to the left

• Stays the same

• Increases as you move to the right

Which direction on the HR Diagram indicates an increase in brightness?

• Toward the top

• Toward the bottom

• Toward the left

• Toward the right

What is the correct order of star colors from hottest to coolest as represented in the HR Diagram?

• Blue, White, Yellow, Red-Orange, Red

• Red, Red-Orange, Yellow, White, Blue

• Yellow, Blue, Red, White, Red-Orange

• White, Blue, Red-Orange, Yellow, Red