HR Diagram

What characteristics are used to classify stars?

• Flammability, weight, and reactivity

• Temperature/color and brightness

• Conductivity, luster, and density

• Malleability, distance, and viscoscity

What is magnitude?

• degree of compactness of a star.

• degree of temperature of a star.

• the age of a star.

• degree of brightness of a star.

What function does a spectroscope perform?

• disperses, or separates, white light from a star into a very wide spectrum of colors

• uses a lens or a combination of lenses to produce magnified images of small objects

• make objects from outer space appear as bright and large as possible.

• allows doctors to view pictures of your digestive tract on a monitor

Using the HR diagram, choose the color of Zeta Eridani

• blue

• white

• yellow

• red

Which star is hotter than Deneb

• Procyon

• Sun

• Regel

• Banard's Star

Which star is brighter than the sun?

• Sirius B

• Procyon B

• Van Maanan's Star

• Aldebaran

Which star is brighter than Alpha Centauri B, but dimmer than the sun?

• Pollux

• Spica

• Tau Ceti

• Mira

Which star is considered a main sequence star?

• Vega

• Betelgeuse

• Pollux

• Van Maanan's Star

Which star is considered a giant star?

• Mira

• Zeta Arindani

• Barnard's Star

• Betelgeuse

Which star is considered a supergiant?

• Sirius B

• Sun

• Betelgeuse

• Van Maanan's Star