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Science ch 1

lesson 2

TermDefinition
How does earth move? earth moves in space in two major ways: rotation and revolution
Axis imaginary line that passes through earth's center and the north and south poles
Rotation the spinning of earth on its axis / 1 rotation= 24h
Orbit a slightly elongated circle, or ellipse
Revloution movement of one object around another 1 revolution = 1year
Calendar system of organizing time that defines the beginning, length, and divisions of a year
What causes seasons? earth has seasons because its axis is tilted as it revolves around the sun
What would happen if earth's axis was straight? there would be no seasons because the temperatures would stay the same all year round
Solstice the days where the sun appears farthest north of the equator and farthest south of the equator n= summer June 21 s= winter December 21
Equinox half way between solstices march and September
Created by: Ella!!
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