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.
