Vocabulary
Tides
Kepler's Laws
Earth/Planets
The Sun
100
Define "ellipse".
What is a geometric shape with two foci?
100
Name the celestial body that is mainly responsible for causing tides.
What is the Moon?
100
State the shape that a planet orbits in according to Kepler's first law.
What is an ellipse?
100
State why Earth experiences seasons.
What is due to its tilted axis?
100
Name the number of layers in the sun.
What are 6 layers?
200
Define "barycenter."
What is the point between two objects where they both are balanced?
200
Name the type of tide that is occurring in the image.
What is Spring Tide?
200
State whether planets travel faster or slower when closer to the sun.
What is faster?
200
Name the angle at which Earths axis is tilted.
What is 23.5 degrees?
200
The colder regions on the sun's surface.
What are sun spots?
300
Define "nutation."
What is the wobble of a body on its axis?
300
State the changes in the tides that occur during a Neap tide.
What are higher low tides and lower high tides?
300
True or False: Kepler's laws apply to any celestial body orbiting the sun.
What is false, it applies to any celestial body orbiting another celestial body?
300
State the approximate amount of time it takes for the Earth to complete a revolution.
What is 365.26 days?
300
Name the state of matter of the Sun.
What is plasma?
400
State what this diagram represents. 
What is "precession?"
400
True or False: Tides occur due to the Sun and moon's gravitational pull creating bulges on each side of Earth.
What is true?
400
Fill in the blanks: According to Kepler's second law, a planet travels "equal __ in equal __" around the Sun.
What are "areas" and "time"?
400
Name the requirements to be a planet.
What are rounded by gravity, orbiting a star, and has a clear orbit?
400
Name the nuclear process that occurs inside of the Sun.
What is nuclear fusion?
500
Define "aphelion."
What is the point in orbit when an object is furthest from the Sun?
500
Name the moon phases which are most likely to occur during a Neap tide.
What are first and third quarter?
500
State the equation associated with Kepler's third law of planetary motion.
What is T2=R3?
500
True or False: Longitude is from North to South but measures East to West.
What is True?
500
Name the 3 types of electromagnetic energy that the sun radiates.
What are Infrared, ultraviolet, and visible light?