H-R Diagram

H-R Diagram

Multiple Choice

Looking at this H-R Diagram what color are the hottest Stars?

• Red

• Blue

• White

• Yello

Multiple Choice

What is the relationship between the size of a star and its luminosity in the H-R Diagram

• There is no relationship at all

• The brighter the star the less luminosity it has

• The brighter the star the more luminosity it has

• The brighter the star the lower its temperature will be.

Multiple Choice

Looking at this H-R diagram what part of the life Cycle is our Sun in?

• Red Giant

• Main Sequence

• White Dwarf

• Blue Giant

Multiple Choice

If our sun was cooler what color would it be?

• Red

• Blue

• White

• Black

Multiple Choice

Is Betelgeuse hotter or cooler than Spica?

• Hotter

• Cooler

• They are the same temperature

Multiple Choice

What type of star is Sirius B

• A dim white dwarf

• A bright white dwarf

• A white Star in the Main Sequence

• A red supergiant

Open Ended

Why do you think Black holes and Neutron Stars are not plotted on the H-R Diagram?

Poll

Back to the Essential questions which ones are you still unclear about?

• 1. What is the H-R diagram

• 2. How is the H-R diagram used to classify stars.

• I'm Unclear about both of them still.

• Neither understand both of them and I'm ready for the exit ticket!