8.8A

There are four groups of stars on the HR Diagram. About 90% of all stars are in the ________.

• Supergiants

• Giants

• White dwarfs

• Main sequence

How can you rearrange the words to match the diagram correctly in terms of sizes in space?

• Solar systems in the largest circle, then galaxies, followed by the universe in the smallest circle.

• Universe in the largest circle, then galaxies, followed by the solar systems in the smallest circle.

• Galaxies in the largest circle, then universe, followed by the solar systems in the smallest circle.

• The diagram is already correct.

There are four groups of stars on the HR Diagram. About 90% of all stars are in the ________.

• Supergiants

• Giants

• White dwarfs

• Main sequence

Based on the data, which star would you presume would have the greatest mass? Hint: The larger the apparent brightness, the brighter the star appears.

• Star X

• Star Y

• Star Z

How can you rearrange the words to match the diagram correctly in terms of sizes in space?

• Solar systems in the largest circle, then galaxies, followed by the universe in the smallest circle.

• Universe in the largest circle, then galaxies, followed by the solar systems in the smallest circle.

• Galaxies in the largest circle, then universe, followed by the solar systems in the smallest circle.

• The diagram is already correct.

Analyze this HR Diagram. Which group of stars is considered to have a lower than average luminosity as well as a higher than average temperature?

• Giants

• Main Sequence

• White Dwarfs

• Supergiants

Analyze this HR Diagram. Which group of stars is considered to have a higher than average luminosity as well as a lower than average temperature?

• Giants

• Main Sequence

• White Dwarfs

• Supergiants

A collection of dust and gas where stars can form is called a...

• universe

• nebula

• black hole

• supernova

Our sun is located near the edge of a ______ galaxy, named the _______.

• Spiral shaped; Milky Way

• Spiral shaped; Solar System

• Elliptical shaped; Milky Way

• Elliptical shaped; Solar System

Stars are classified on the HR Diagram by...

• luminosity and brightness.

• temperature and absolute magnitude (or luminosity).

• temperature and apparent magnitude.

• temperature and distance.