Learn OC.2a Vocabulary

Going straight across from side to side.

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horizontal

Distance north or south of the Equator; measured in degrees.

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latitude

0 degrees latitude; an imaginary line drawn around the Earth equally distant from both poles, dividing the Earth into northern and southern hemispheres.

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equator

90 degrees north latitude.

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north pole

90 degrees south latitude.

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south pole

66.5 degrees north latitude.

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arctic circle

66.5 degrees south latitude.

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Antarctic circle

23.5 degrees north latitude.

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Tropic of Cancer

23.5 degrees south latitude.

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Tropic of Capricorn

Running straight up and down; upright.

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vertical

Distance east or west of the Prime Meridian; measured in degrees.

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longitude

0 degrees longitude; meridian that passes through the Royal Observatory at Greenwich, England.​

prime meridian

180 degrees longitude; the line that marks where each new day begins.

international date line

The deepest part of the ocean floor; made up of rolling hills and flat plains; defined by location and partially bordered by continents.

ocean basin