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All about Kepler Name that Scientist Dwarf Planets Vocab Things you probably should know
100
What is the major axis.
The line that runs through both foci of an ellipse (cuts an ellipse in half).
100
Who is Galileo.
The first person to observe the four moons around Jupiter.
100
What is Ceres
The only dwarf planet located between Mars and Jupiter.
100
What is Heliocentric.
The belief that the Earth orbits the Sun.
100
What is Mercury, Venus, Earth, and Mars.
List the four Inner planets (IN ORDER!)
200
What is the semi-major axis.
Represents the average distance of a planet from the Sun. Half the major axis.
200
Who is Clyde Tombaugh.
Discovered Pluto in 1930.
200
What is Eris.
This dwarf planet is larger than Pluto and was discovered in 2003.
200
What is Geocentric.
The belief that the Sun orbits the Earth.
200
What is Venus and Uranus.
Name the two planets which experience retrograde rotation.
300
What is Kepler's first law.
This law states that the orbit of each planet is on an ellipse.
300
Who is William Hershel.
Discovered Uranus in 1781.
300
What is the asteroid belt.
Ceres is located in this region of space, between Mars and Jupiter.
300
What is the Astronomical Unit.
A unit of measurement used to measure distances within the solar system. Also, the average distance between Earth and the Sun.
300
What is the orbital period of the planet.
In Keplers equation: P^2 = A^3,
what is the variable P?
400
What is Kepler's third law.
This law states that the orbital period squared equals the semi-major axis cubed.
400
Who is Aristotle.
Proposed that the planets orbited on perfect circles, which influenced centuries of astronomers to believe the same.
400
What is the Kuiper Belt.
Pluto is located in this region of space, past Neptune.
400
Retrograde Motion.
The apparent backward motion of a planet.
400
What is the semi major axis.
In Keplers equation P^2 = A^3,
what is the variable A?
500
What is Kepler's second law.
This law states that an imaginary line sweeps out equal areas in equal time.
500
Who is Ptolemy.
Created a system of circles on circles to explain the apparent backward motion of the planets.
500
What is "clearing the neighborhood".
The IAU has 3 criteria for a planet. Which criteria does a dwarf planet not meet?
500
What is a meteorite.
A small fragment of an orbiting body that has fallen to Earth. It does not completely burn up in Earth's atmosphere, and strikes the surface of Earth.
500
Planet B.
The orbit of planet A has an eccentricity of 0.07.
The orbit of planet B has an eccentricity of 0.25.
Which planet has a more elliptic orbit?






Solar System

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