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