Chapter 22

The source of the sun's energy is the result of

How long does it take light from the sun to reach the Earth?

The most explosive events to occur on the Sun are ______.

The sun has enough fuel to last how many more years?

Why would the moon make an good site for an observatory?

Which of the following colors has the longest wavelength

Granules are located on this layer

Which part of the electromagnetic spectrum is detected as heat?

In order to have a nuclear fusion produced in the core of the sun there must be

The spectra of most stars are of this type

The sun produces energy by converting ____________

To determine whether a celstrial body is approaching or receding from Earth, astronomers employ _________________

The southern lights are known as the

What layer of the Earth's atmosphere that produces auroras?

As an object approaches the Earth the spectra shifts toward the ____ end of the spectra.

How did Galileo prove the sun rotated?

Which layer of the sun is visible only during a total solar eclipse?

Auroras are an effect caused by

What fuel is being consumed during nuclear fusion?

We know that the area surrounding a sunspot is hotter than the sunspot

_________ are great arches of hot gas streaming between sunspots.