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10 terms

Chapter 20 (8- 17)

STUDY
PLAY
Prograde rotation
The COUNTERCLOCKWISE SPIN of a planet or moon as seen from above the planet's north pole
Retograde rotation
The CLOCKWISE SPIN of a planet or moon as seen from above the planet's north pole
Gas giant
A LARGE, GASEOUS PLANET of the outer solar system with no known solide surface
Satellite
A natural or artificial BODY THAT REVOLVES AROUND A MORE MASSIVE BODY
Comet
A SMALL body of ICE, ROCK, and cosmic dust LOOSELY PACKED TOGETHER
Asteroid belt
The REGION of the solar system that most ASTEROIDS OCCUPY BETWEEN the orbits of MARS and JUPITER
Asteroid
A SMALL ROCKY BODY that REVOLVES AROUND THE SUN
Meteroid
A VERY SMALL ROCKY BODY that REVOLVES AROUND THE SUN
Meteorite
A METEOROID that REACHES the EARTH'S surface WITHOUT BURNING up completely
Meteor
A STREAK OF LIGHT caused when a meteoroid or comet dust burns up in the Earth's atmosphere