The Antarctic Circle lies three-quarters of the way between the equator and the South Pole.

3/4 of the way between the equator and the North Pole lies the Arctic Circle. Above this line is the Arctic region, where nights last for 24 hours in the middle of winter. It is known as the Land of the Midnight Sun because in summer the sun never sets

The DEW (distant early warning) line is a 3,000-mile line of radar stations north of the Arctic Circle. It should notify the U.S. and Canada of the approach of enemy planes or missiles.

This imaginary circle goes around the middle of the earth for 24,902 miles. It divides the Northern Hemisphere from the Southern Hemisphere and is exactly half way between the North and South Poles.

The International Date Line

An imaginary line where the date changes one day when passed. It is one day earlier east of the line than it is on the west.

Imaginary lines:run north&south on a map from pole - pole. Meridians express degrees of longitude or how far a place is away from prime meridian (runs through Greenwich, England). Longitude&latitude form grid to locate any place on the earth.

maginary lines that run east and west on a map. Parallels represent degrees of latitude, or how far a place is away from the equator. The equator's latitude is 0° and the poles are 90° south and north. One degree of latitude equals about 69 miles.

A parallel line of latitude that is a quarter of the way from the equator to the North Pole. During the summer solstice, the sun is directly overhead. 23.5 degrees north

The Tropic of Capricorn

This line of latitude is a quarter of the way from the equator to the South Pole. During the winter solstice, the sun is directly overhead. 23. 5 degrees south

North (top), East (right), South (bottom), West (left). The Western Hemisphere includes North and South America, their islands, and the surrounding waters. The Eastern Hemisphere includes Asia, Africa, Australia, and Europe.

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Significant Imaginary Lines

Question	Answer
The Antarctic Circle	The Antarctic Circle lies three-quarters of the way between the equator and the South Pole.
Arctic Circle	3/4 of the way between the equator and the North Pole lies the Arctic Circle. Above this line is the Arctic region, where nights last for 24 hours in the middle of winter. It is known as the Land of the Midnight Sun because in summer the sun never sets
DEW Line	The DEW (distant early warning) line is a 3,000-mile line of radar stations north of the Arctic Circle. It should notify the U.S. and Canada of the approach of enemy planes or missiles.
The Equator	This imaginary circle goes around the middle of the earth for 24,902 miles. It divides the Northern Hemisphere from the Southern Hemisphere and is exactly half way between the North and South Poles.
The International Date Line	An imaginary line where the date changes one day when passed. It is one day earlier east of the line than it is on the west.
Meridians	Imaginary lines:run north&south on a map from pole - pole. Meridians express degrees of longitude or how far a place is away from prime meridian (runs through Greenwich, England). Longitude&latitude form grid to locate any place on the earth.
Parallels	maginary lines that run east and west on a map. Parallels represent degrees of latitude, or how far a place is away from the equator. The equator's latitude is 0° and the poles are 90° south and north. One degree of latitude equals about 69 miles.
The Tropic of Cancer	A parallel line of latitude that is a quarter of the way from the equator to the North Pole. During the summer solstice, the sun is directly overhead. 23.5 degrees north
The Tropic of Capricorn	This line of latitude is a quarter of the way from the equator to the South Pole. During the winter solstice, the sun is directly overhead. 23. 5 degrees south
The Hemispheres	North (top), East (right), South (bottom), West (left). The Western Hemisphere includes North and South America, their islands, and the surrounding waters. The Eastern Hemisphere includes Asia, Africa, Australia, and Europe.

Created by: jlarose

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