Exam 22: Motions in the Heavens

In the Northern Hemisphere, the Pole Star (or North Star) ____.

Astronomers build telescopes that collect wavelengths of electromagnetic energy outside the visible portion of the spectrum, such as radio waves or X-rays.

The Sun completes an orbit around the center of the Milky Way in about ____ years.

In 1530, ____________________ proposed that the Sun, not Earth, is the center of the Solar System.

Who was the first to explain the Doppler effect?

Who was Galileo and what was his contributions to science?

In what year was the Hubble Space Telescope launched into space?

What a red shift?

What is the geocentric model and who proposed it?

Describe light pollution and how it can interfere with how a telescope operates.

Describe Aristotle's geocentric theory that was based on two observations and one philosophical premise.

Groups of stars that seem to form a pattern when viewed from Earth are called ____________________.

What is a spectrum?

When the Moon passes directly between the Earth and the Sun, it produces a(n) ____.

Give an example of the Doppler effect and describe who first explained it.

An absorption spectrum can be found in light collected by a telescope because ____.

What is a blue shift?

When the visible portion of the Moon increases, it is said to be ____________________.

When light passes through a prism, it separates into an ordered array of colors called a(n) ____________________.

What is the wide band outside of the area where the Sun is totally eclipsed, in which only a portion of the Sun is hidden from view?