The distance between the Earth and the Sun
Deals with planet composition- the first four planets are small dense and rocky
Counterclock wise rotation like the Earth
Clockwise rotation like that of Venus
Deals with planet composition- A planet that has a deep massive atmosphere (made of gas) such as Jupiter, Saturn, Uranus, and Neptune
A natural or artifical body that revolves around another body in space. Example the moon is a _______ of the Earth. The Earth is a ______ of the sun
A small body of ice, rock, and cosmic dust that follows an ellipical orbit around the sun and that gives off gas and dust and forms a tail when it is close to the sun.
A small rocky object that orbits the sun usually in a band between Mars and Jupiter
The region of the solar system between the orbits of Mars and Jupiter in which most asteroids orbit
small rocky body that travels through space
A meteroid that reachs the surface of the Earth without burning up completely
A bright streak of light that results when a meteroid burns up in the Earth's atmosphere
Period of Revolution
The time it takes for a body in space to orbit completely around another body = 1 year
Period of Rotation
The time it takes for a body to turn (spin) completely around = 1 day
the amount of matter in a given space
a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe
The distance from the center of a circle to a point on the circle
the measurement across an object, passing through the center
a measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an object
the amount of matter in an object
what its made of.
the visual appearance of something
the envelope of gases surrounding any celestial body
Where it is located in the solar system (example 4th planet from the sun, or asteroid belt, or Kuiper Belt -Pluto and beyond)
Number of Moons
Number of discovered moons that orbit the body
Presence of water
Has water been discovered water on the body or on it's moon system?
What the surface (if it has any!) looks like- example does it have mountains, volcanoes, crater marks, hills, valleys, etc....?