Unit 9 Flashcards
Atmosphere
a mixture of gases that surrounds a planet or moon.
Gravity
a force of attraction between objects that is due to their masses
Accomodations
changes that must be made in an environment to maintain livable conditions for humans
Manned
Space Exploration - humans on board space craft
Pressure
continuous physical force exerted on or against an object by something in contact with it
Proximity
closeness
Radiant Energy
the energy we get from the sun, includes infrared and ultraviolet energy
Temperature
measurement of heat
Solar System
sun, planets, and all the other objects that revolve around the sun
Micro Gravity
condition in which people or objects appear to be weightless
Habitable zone
range of orbit around a star in which a plant can support liquid water
