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Characteristics
Classification
Terrestrial
Jovian
Misc.
100
the shape of a planet's orbit
What is an ellipse
100
planets farther from the sun than Earth
What are superior planets
100
This planet is brighter than all of the other planets
What is Venus
100
planet known for its great red spot
What is Jupiter
100
the downward pull of an object resting on a planet
What is surface gravity
200
the farthest point from the sun in a planet's orbit
What is the aphelion
200
planets like earth in density and size
What are terrestrial planets
200
This planet is sometimes called the red planet
What is Mars
200
Jupiter's four largest moons
What are the Galilean moons
200
to pass in front of the sun as viewed from Earth
What is transit
300
a planet's reflectivity
What is albedo
300
an optical illusion; also the apparent backward motion of a planet compared to the fixed stars
What is retrograde motion
300
the fastest moving planet
What is Mercury
300
the moon of Jupiter that has active volcanoes
What is Io
300
the third planet from the sun
What is Earth
400
He developed the laws of planetary motion
Who is Johannes Kepler
400
also known as the gas giants
What are the Jovian planets
400
the planet nearest Earth at its point of closest approach
What is Venus
400
Saturn's moon that contains it's own atmosphere
What is Titan
400
the shape that all planets appear as viewed from a telescope
What is a disk
500
the three factors that determine a planet's apparent magnitude
What are distance, albedo, and size
500
these planets revolve more rapidly than earth
What are the inferior planets
500
these are the two moons of Mars
What are Phobos and Deimos
500
the Jovian planets lack free oxygen and one other MAJOR substance
What is water
500
the eight planets in order of increasing distance from the sun
What are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune