The Study of the properties of objects in space and the laws under which the universe operates.
What is Astronomy?
100
Credited with the first successful attempt to establish the size of the Earth,
Who is Eratostheness?
100
Point when moon is closest to Earth
What is Perigee?
100
Occurs when the moon passes between Earth and the Sun and casts a shadow on Earth.
What is a Solar Eclipse?
100
Rotation is when a planet or moon turns all the way around or spins on its axis one time.
What is Rotation?
200
The Location of Earth is in the center of the universe and the Sun orbits the Earth.
What is Geocentric Model?
200
Developed a star catalog of almost 850, which he divided into 6 groups according to their brightness.
Who is Hipparchus?
200
Point when moon is farthest from Earth
What is Apogee?
200
Occurs when the moon passes into Earth's shadow.
What is a Lunar Eclipse?
200
When a planet or moon travels once around an object this is considered a revolution.
What is Revolution?
300
The Earth orbits the Sun and the Sun is the center of the Universe.
What is Heliocentric Model?
300
Was the first Greek to profess a Sun-centered, or heliocentric universe.
Who is Aristarchus?
300
This contains the phases of the moon and takes 29 1/2 days.
What is Synodic month?
300
These people can see a total eclipse of the moon when it occurs.
Who are solar people?
300
This takes a year to happen on Earth.
How does Revolution take on Earth?
400
Planets revolve around the Sun at varying speed and Planets sweep out equal equal areas in the same amount of time.
What is Kepler's Law of Equal Areas?
400
Concluded Earth was a planet and Constructed a model of the solar system that put the Sun at the center, but he used circular orbits for the planets.
Who is Nicolaus Copernicus?
400
True period of the Moon's revolution around the Earth and takes 27 1/3 days.
What is Sidereal month?
400
Fairly smooth lowlands and Originated from asteroid impacts and Lava flooding the surface.
What is Maria?
400
This takes 1 day on earth and appears to make the sun come up in the morning and to set at night.
How long is rotation on Earth?
500
There is a proportionalrelation between a planet's orbital period and its distance to the Sun (measured in Astornomical Units(AU) one AU averages 150 million kilometers, or 93 million miles)
What is Harmonic Law?
500
Proved that the force of gravity, combined with the tendency of the planet to remain in a straight-line motion(inertia), results in the elliptical orbits discovered by Kepler
Who is Sir Isaac Newton?
500
Sunlit side of the moon faces earth.
What is Lunar phases of the Moon?
500
Bright, densly cratered regions and make up most of the Moon and all of the "back side" of the moon.
What is HighLands?
500
The moon does this every 27 days as well as something else every 27 days. This is why we only see one side of the moon and why if we lived on the moon a day and a year would be the same length.