Crash Course Astronomy #26 - The Stars

Crash Course Astronomy #26 - The Stars

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Multiple Choice

What is the only noticeable distinction between different stars you can see with the naked eye?

• color

• brightness

• distance

• chemical composition

Multiple Choice

Before 1901, star spectra were classified based on:

• Strength of Helium lines

• Strength of Hydrogen lines

• Brightness

• color

Multiple Choice

Which scientist was the main proponent for coming up with the modern classification scheme?

• Marie Curie

• Taylor Swift

• Annie Jump Cannon

• Barbra Duck Pistol

Multiple Choice

The modern classification system is based on:

• The strength of hydrogen lines

• The strength of helium lines

• A combination of both

Multiple Choice

In order of hottest to coolest, what is the modern classification?

• OBAFGKM

• OWAGIA

• ABCDEFG

• WTHIDGAF

Multiple Choice

Which of the following stars is hotter?

• G1

• G4

Multiple Choice

Which of the following stars is hotter?

• O3

• O2

Multiple Choice

Which of the following stars is hotter?

• B7

• F1

Multiple Choice

Which of the following stars is the coolest?

• B7

• F1

• G5

• G2

Multiple Choice

What is the single most important graph in Astronomy?

• The H-R Diagram

• The Blackbody Curve

• The Queen's Gambit

• The Watson-Crick Diagram

Multiple Choice

Most stars fall into which part of the H-R Diagram?

• The upper-right

• The dwarf region

• The Main Sequence

• The Upper-middle thingy

Multiple Choice

Where on the H-R diagram would you find a large, hot star?

• The upper left

• The lower right

• The upper right

• The lower left

Multiple Choice

The H-R diagram instantly tells you all but which of the following characteristics of a star?

• Size

• Temperature

• Luminosity

• Spin