Universe & Stars Test - 1st Period

Use the HR Diagram at your table. How does Sirius B compare to our Sun?

• Sirius B is bigger and dimmer.

• Sirius B is smaller and cooler.

• Sirius B is bigger and hotter.

• Sirius B is smaller and dimmer.

Use the HR Diagram at your table. How does Spica compare to Bernard's Star?

• Spica is brighter and hotter.

• Spica is brighter and cooler.

• Spica is dimmer and hotter.

• Spica is dimmer and cooler.

Use the HR Diagram at your table. How would you describe Antares?

• Antares is cool, big, and bright.

• Antares is cool, dim, and small.

• Antares is hot, dim, and small.

• Antares is hot, bright, and big.

Use the HR Diagram at your table. Name a star with average temperature and brightness.

• Zera Eridani

• Procyon

• Mira

• Sirius B

Use the HR Diagram at your table. Name a bright Main Sequence star.

• Tau Ceti

• Bernard's Star

• Regulus

• Altair

Use the HR Diagram at your table. Which star has a low luminosity but a high temperature?

• Rigel

• Sirius B

• Deneb

• Procyon B

Use the HR Diagram at your table. Which star has a high luminosity and a high temperature?

• Rigel

• Sirius B

• Deneb

• Procyon B

Stars spend most of their life in -

• nebula

• supernova

• main sequence

• black hole

When a star stopes burning hydrogen and begins to expand and cool, it is becoming a -

• suprenova / planetary nebula

• black hole / white dwarf

• nebula / protostar

• giant / supergiant

When forces inside a massive star work against each other, they cause the mass of the star to explode creating a -

• supernova

• nebula

• black hole

• white dwarf