Astronomy Unit 2 Review
THE MOON
A celestial body that orbits another celestial body is known as a what?
What is the name of the Mars sized object said to have collided with Earth in the Giant Impact Theory?
The reason Earth’s climate is relatively stable is because the Moon is helping to maintain what?
The period of time it takes for the Moon to go through all its phases is called what?
What is a sidereal month and how long is it?
There are four main phases of the Moon. How many days apart are they from each other?
What period of time is it when we have a Supermoon? Micromoon?
What angle is the Moon’s orbit tilted at?
MOON AND ECLIPSES
What Moon phases are required for a Solar and Lunar Eclipse?
Define eclipse.
The Moon passes through the Earth’s orbit twice, at places called what?
The darkest part of the shadow during an eclipse is called what?
The light sections of the Moon are called highlands, and the dark sections are called what?
During a Lunar Eclipse, what phenomena causes the Moon to turn red?
What is an Annular Solar Eclipse?
STARS AND ROCKS
Mainly found in the Kuiper Belt and Oort Cloud, these objects are known for their long distinct tails.
How many officially recognized constellations are there?
How long does it take light to reach the Earth from the Sun?
When a rock in space is coming to Earth but has not reached the atmosphere yet, what is it?
Where are meteorites found?
What are comets mainly made of?
LOCAL SKY
What direction would you have at an Azimuth of 135 degrees?
How many arcminutes and arcseconds are in one degree?
The point that lies directly overhead at 90 degrees is called what?
What is the range of degrees for Azimuth and Altitude?
What is the line that goes from north to south while going through the zenith?
What shape did ancient cultures think the sky took around the Earth?

PARALLAX
Define Parallax.
The closer the object is, the _________ the observed parallax should be.
The Greeks were unable to detect what?
Who used parallax on eclipses to find the distance from the Earth to the Sun?
Tycho used parallax to prove what was real?
Struggling with parallax, what answer did the Greeks decide on to explain it?
CELESTIAL SPHERE
What does the Celestial Sphere show?
What are the names of the Celestial Coordinates?
The apparent path of the Sun on the Celestial Sphere is called what?
What angle is the Ecliptic tilted at?
What coordinate can be given in both degrees and time?
What does it mean to be circumpolar?
What star is at the North Pole?
What is the Celestial Equator showing?
You are told that your friend is trying to give a declination value to a star below the Celestial Equator. Should it be positive or negative?
MATH IN ASTRONOMY
What three variables are used in the Small Angle Formula?
Find the diameter of the Moon if you know it is 380,000 km away and its angular size is currently 0.5 degrees.
The Small Angle Formula requires the distance between the observer and the object in question. What method can get you that distance?
In order for the Moon to totally block the Sun, what does it need to have?
If the Sun’s physical size is 1,390,000 km and its angular size is 0.53 degrees, about how far away is it?
POSSIBLE SHORT ANSWER QUESTIONS
When we look at stars, we do not see them as they currently are. What do we see then, and why?
Give an example of local and global coordinates and describe the difference between them.
Describe what the periods of Perigee and Apogee are. Does the Moon have a special name when in them?
Why was the idea that the Sun was the center of the solar system initially rejected by the Greeks?
You have been told that Polaris is going to be replaced as the North Star by the star Vega. In a race against other astronomers, you use parallax and find the star is 25.05 light years away. If your angular size is 0.00324 arcseconds, what is Vega’s physical size?


very short and simple answers.

example

What is the name of the Mars sized object said to have collided with Earth in the Giant Impact Theory?
theia