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Unit 9 - Outer Space

review for Unit 9

celestial bodies Any natural body floating in the atmosphere, such as planets, comets and asteroids
atmosphere Mixture of gases surrounding a planet
gravitational pull The pull between objects due to gravity
solar system A central star and the planets, and other celestial bodies that orbit it
Goldilocks Principle A planet must neither be too far away from, or too close to a galactic center to support life
sun Plants change radiant energy from the sun into food that animals need for energy
accommodation An adaptation or adjustment that allows something to occur
space suit A garment worn to keep a human alive in the harsh environment of outer space
microgravity The condition in which people or objects appear to be weightless
earth The perfect HABITABLE planet to live on
ozone layer Chemicals in the air create holes in this layer allowing exposure to ultraviolet radiation
habitable zone Suitable or good enough to live in
ultraviolet radiation Invisible rays from the sun can burn the skin causing cancer
International Space Station A habitable artificial satellite that orbits earth where astronauts live and conduct experiments
Created by: Blackcat8765



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