Review Questions - Formative Library | Library

1

What two factors determine how bright a star appears to be in the sky?

1

Explain why color is a measure of a star’s temperature.

1

What is the main reason that the spectra of all stars are not identical? Explain.

1

What elements are stars mostly made of? How do we know this?

1

What did Annie Cannon contribute to the understanding of stellar spectra?

1

Name five characteristics of a star that can be determined by measuring its spectrum. Explain how you would use a spectrum to determine these characteristics.

1

How do objects of spectral types L, T, and Y differ from those of the other spectral types?

1

Do stars that look brighter in the sky have larger or smaller magnitudes than fainter stars?

1

The star Antares has an apparent magnitude of 1.0, whereas the star Procyon has an apparent magnitude of 0.4. Which star appears brighter in the sky?

1

Based on their colors, which of the following stars is hottest? Which is coolest? Archenar (blue), Betelgeuse (red), Capella (yellow).

1

Order the seven basic spectral types from hottest to coldest.

1

What is the defining difference between a brown dwarf and a true star?

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