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PS INV 1 &2
Term | Definition |
---|---|
hydrosphere | interacting water on, under, or above the Earth's surface |
biosphere | system of interacting living organisms |
atmosphere | layer of gases that surround an object(Earth) held in place by gravity |
geosphere | Earth's core, mantle, and crust |
system | a collection of interacting parts |
rotation | spinning on its axis |
axis | an imaginary axle that a planet spins on |
revolution | the path one object takes to travel around another object synonym: orbit |
solar angle | the angle at which light passes through the atmosphere; measured from the Earth's surface |
equinox | a day of the year where the sun's rays shine directly on the equator; translates to equal night |
reason for the seasons | the Earth is tilted as it orbits the sun. |
reason for day and night | the earth rotates; when it faces the sun it is day; when facing away it is night |