Key Concepts

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Ch. 23: Light, Astronomical Observations, and the Sun

After reading and studying Ch. 23, you should be able to:

Concept 1: Explain electromagnetic radiation and the two models used to explain its properties.

Concept 2: Describe how the field of spectroscopy and light spectra can be used to investigate the properties of stars.

Concept 3: Compare and contrast different types of telescopes and explain how they are used.

Concept 4: Understand the properties and characteristics of our Sun, including the source of the Sun's energy.

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