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ASTR Exam 1

QuestionAnswer
Two stars in the same constellation may actually be very far apart from one another
Beijing and Philadelphia have about the same latitude but very different longitudes. Therefore, tonight's night sky in these two places: will look about the same.
When it is summer in Australia, it is: winter in the United States.
If the Sun rises precisely due east: it must be the day of either the spring or fall equinox.
The fact that we always see the same face of the Moon tells us that: the Moon's rotation period is the same as its orbital period.
In winter, Earth's axis points toward the star Polaris. In spring: the axis also points toward Polaris.
A week after full moon, the Moon's phase is: third quarter.
If there is going to be a total lunar eclipse tonight, then you know that: the Moon's phase is full.
When we see Saturn going through a period of apparent retrograde motion, it means: Earth is passing Saturn in its orbit, with both planets on the same side of the Sun.
Total solar eclipses and total lunar eclipses often happen two weeks apart. Which kind of eclipse can more people witness with their own eyes? far more people could see the total lunar eclipse
Which of the following was not a major advantage of Copernicus's Sun-centered model over the Ptolemaic model? It made significantly better predictions of planetary positions in our sky.
When we say that a planet has a highly eccentric orbit, we mean that: in some parts of its orbit it is much closer to the Sun than in other parts.
Earth is closer to the Sun in January than in July. Therefore: Earth travels faster in its orbit around the Sun in January than in July.
According to Kepler's third law: Jupiter orbits the Sun at a faster speed than Saturn.
Galileo's contribution to astronomy included: making observations and conducting experiments that dispelled scientific objections to the Sun-centered model.
Suppose you visit another planet: Your mass would be the same as on Earth, but your weight would be different.
Consider the statement "There's no gravity in space." This statement is: Completely false.
As an interstellar gas cloud shrinks in size, its gravitational potential energy: gradually is transformed into other forms of energy.
If Earth were twice as far from the Sun, the force of gravity attracting Earth to the Sun would be: one-quarter as strong.
According to the law of universal gravitation, what would happen to Earth if the Sun were somehow replaced by a black hole of the same mass? Earth's orbit would not change.
Earth is located at one _____ of the Moon's orbit. Focus
According to Kepler's second law, Jupiter will be traveling most slowly around the Sun when at ______. Aphelion
Earth orbits in the shape of an ______ around the Sun. Ellipse
The mathematical form of Kepler's third law measures the period in years and the _____ ____ in astronomical units. Semimajor Axis
According to Kepler's second law, Pluto will be traveling fastest around the Sun when at _______. Perihelion
The extent to which Mars' orbit differs from a perfect circle sis called its _______. Eccentricity
A solar eclipse that occurs when the new moon is too far from Earth to completely cover the Sun can be either a partial solar eclipse or an _____ ______. Annular eclipse
Anyone looking from the night side of Earth can see a _____ _____ ______. Total lunar eclipse
During some lunar eclipses, the Moon's appearance changes only slightly, because it passes only through the part of Earth's shadow called the ______. Penumbra
A _____ _____ ______ can occur only when the Moon is new and has an angular size larger than the Sun in the sky. Total solar eclipse
A partial lunar eclipse beings when the Moon first touches Earth's _____. Umbra
A point at which the Moon crosses Earth's orbital plane is called a ____. Node
Created by: ageesta
 

 



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