10.3 Flashcards
inner planet
A planet between the sun and the asteroid belt.
outer planet
one of the five planets beyond the asteroids belt
asteroid belt
Region between mars and Jupiter where most asteroids are found
meteor
A chunk of rock from space that burns up as it travels through earth’s atmosphere
meteorite
A chunk of rock from space that strikes the surface of earth or the moon
comet
A dirty snowball orbiting the sun a mixture of ices, frozen gases, rock, and dust left over from the formation of the solar system
galaxy
A collection of billions of stars. our sun belongs to the milky way galaxy.
Insolation
The amount of the suns energy that reaches earth at a given time and place.
Weather
What the lower atmosphere is like at any given place and time
Nitrogen
Ninety-nine percent of the air we breath
Air pressure
The force put on a given area by the weight of the air above it
Troposphere
The layer of the atmosphere closest to the earths surface
Barometer
A device for measuring air pressure
Oxygen
Ninety-nine if the air we breath
Temperature
The degree that show hotness or coldness