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