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Seasons

vocabulary review for seasons

TermDefinition
astronomy the study of the moon, stars, and other objects in space
rotation -the spinning of the Earth on its axis -takes 24 hours -causes day and night
axis -the imaginary line that passes trhough the Earth's center and the North and South poles -imaginary line on which the Earth spins -tilted at 23.5 degrees
revolution -movement of one object around the other (Earth travels around the sun) -Earth travels around the sun, takes 1 year or 365 1/4 days
orbit -Earth's path as it revolves around the sun -Earth's path is a flattened circle, or oval shape- called an ellipse
seasons -caused by the Earth's tilt on its axis as it moves (revolves) around the sun
poles -Energy from the sun is spread out over a greater area, causes these areas to have lower temperatures -Sunlight hits these areas at an angle because the Earth is tilted on its axis
equator Sunlight hits this area more directly because the Earth is tilted on its axis
summer When the north end of Earth's axis is tilted toward the sun, the Northern Hemisphere has ________________.
winter When it is Summer in the Northern Hemisphere it is ___________ in the Southern Hemisphere
hemisphere -one half of the sphere that makes up Earth's surface -North or South of the equator
summer In the Northern Hemisphere the Earth is at its greatest distance from the sun during _______________.
true Summer and Winter are not affected by changes in Earth's distance from the sun -(true or false)
longer The hemisphere that is tilted toward the sun will have ____________ days - (shorter or longer)
direct The hemisphere that is tilted toward the sun will recieve more ___________ rays from the sun. - (direct or indirect)
solstice -two days each year, when the noon sun is overhead at either 23.5 degrees south or 23.5 degrees north (longest and shortest day of the year)
equinox -occurs half way between the solstices, when neither hemisphere is tilted toward or away from the sun (two days a year) -means "equal night and day"
Created by: hdambrosio