AST Test 1 (pt. 1)

If the Moon is too far from Earth during a solar eclipse, the ___ does not reach Earth's surface.

Why is the term "arc" used to describe units of measure for angular distance?

Most Greek philosophers believed in a geocentric Universe.

Astronomers describe the brightness of stars using the brilliance scale.

What does a waning crescent moon mean?

What are two parts of a shadow during an eclipse?

Kepler's first law of planetary motion defied what long-held belief with ancient astronomer?

Betelgeuse is the brightest star of which constellation?

What field of science focuses most on the connections between ancient celestial observations and such structures? (pic)

Galileo's book Dialogo strongly defended the work of which astronomer?

Due to the high temperatures of the gas, what color do prominences appear as during a solar eclipse?

In the image below, what is the observer measuring?

Ptolemy described motion of planets by devising a small circle called __ which rotated around the edge of larger circle.

Kepler's 3rd law of planetary motion states "A planets __ squared is proportional to its average distance from Sun cubed

What was the purpose of the IAU establishing 88 official constellations?

Ptolemy based his model on theories thought first by Plato, who believed each celestial body traveled around small circl

If the Moon crosses Earth's shadow at the center of the umbra, how long will the entire eclipse last from start to finis

What was the most controversial issue surrounding the nature of the Universe during the Renaissance?

Which part of the Sun is observable during a total solar eclipse?

Kepler discovered that planets do not move at uniform speeds along their elliptical orbits.

At what point is the Moon closest to Earth?

A "larger" Moon on the horizon is an optical illusion.

When can Sirius, a favorite star of the Northern Hemisphere, be observed?

In most months, there are no eclipses.

What is the apparent path of the Sun against the background of stars?

The accompanying illustration demonstrates Copernicus's theory of

When Tycho saw no parallax in the position of a new star, he published his evidence against which model of Universe?

What astronomical period takes 18 years 11 1/3 days to complete?

The chromosphere is often marked by eruptions on the solar surface called

Because Earth's axis of rotation is inclined 23.4 degrees from vertical, the Sun moves into northern sky in the spring.

What was Eratosthenes's mathematical contribution to the history of anatomy, even though it was incorrect?

During which event does the Sun reach its most southern point in the celestial sphere within the Northern hemisphere?

Predicting an eclipse is easy because all you have to do is keep track of where the Moon crosses the ecliptic.

The nadir marks the point of the celestial sphere directly above your head.

As the illuminated part of the Moon grows larger from new to full, it is said to "wane."

How many Saros cycles does it take for the same eclipse to occur at about the same location on Earth?

Examine the accompanying figure. Which term would be the correct scientific designation for Polaris in Ursa Minoris?

The International Astronomical Union established 88 constellations that represent a defined area of the sky.

In Kepler's model of the Universe, what was the purpose of the five regular solids?

What tool did Galileo use to prove that the Moon was not perfect?

In the Copernican system, Earth moves slower along its orbit than the planets that lie farther from the Sun.

Galileo's discovery of Saturn's moons proved that Earth, too, could move and still keep its satellite.

In 1632, which book did the Inquisition order sales to be stopped?

Which is a unit used to measure angular distance?

Whose geocentric model of the Universe dominated astronomy for 2,000 years?

Any location on the Moon is sunlit for 3 weeks and is in darkness for 1 week as the Moon rotates.

If two stars have a magnitude difference of 5, what is their flux ratio?

When the Moon is totally eclipsed, the Moon is illuminated by some sunlight reflected by Earth's atmosphere.

Earth's rapid rotation makes its axis sweep out the shape of a cone, like a heavy top slowing down. This rotation is

The seasons are cause by Earth's orbit moving closer to or farther from the Sun.