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14 Cards in this Set

  • Front
  • Back
What covers almost 3/4 of the planet earth?
What is a sattelite?
Something that orbits a planet
What holds the planets in their orbit?
What is the solar system?
The sun,planets and moons and the objects that orbit the planets.
What is an atmosphere?
It is and invisible layer of gases over a planet.
What are the planets(in order from the nearest to the farthers from the sun)?
Mercuery, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto
What is a galaxy?
A large group of stars held together by gravity.
What is gravity?
It is an invisible force that pulls objects together.
What is geology?
The study of the Earth.
How long does it take the Earth to travel around the sun?
One year
What is an axis?
An imaginary line that runs through the center of the Earth form pole to pole.
What planet is covered with a thick layer of clouds made up of poisonous gas?
What planet is three times closer to the sun than Earth?
What is and Astroid?
chuncks of rock and metal