identify the following with the help of a globe / atlas. 1. identify the equator, tropic of cancer, tropic of capricorn, arctic circle, antarctic circle, north pole and south pole
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Answer:
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Step-by-step explanation:
Introduction to Globe
A globe is a true model of the earth, in a very compact form. In a globe, there is a needle called the axis that is fixed through the globe in a tilted manner. This axis of the globe passes through two extreme points: known as the Poles (the North Pole and the South Pole). The axis is shown in the form of a needle on the globe. In reality, the earth has no such axis.
Globe - Latitudes and Longitudes
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Latitudes of the Earth
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Equator
The Equator is the circle passing through the center of the earth. It is perpendicular to the axis and goes on to divide the earth into two Hemispheres, the Northern and the Southern.
There are a number of more circles parallel to the equator. These circles have their centers on the axis and have different radii. Such circles are known as the Parallels of Latitudes. You can identify these parallels using the degrees. On the equator, the latitude is zero degrees.
Prime Median
There is a circle which passes through the Greenwich in Britain. It is perpendicular to the equator, and parallel to the axis. It is known as the Prime Meridian. Prime Meridian divides the earth into two Hemispheres, the Eastern and the Western.
Together, the Equator and the Prime Meridian divide the earth into four equal parts. There are a number of more circles parallel to the Prime Meridian. These have their center at the center of the earth and have equal radii. Such circles are known as the Degrees of Longitudes.
Latitudes and Longitudes
In the Northern Hemisphere, the latitudes are designated as degrees north (°N). For instance, 10°N, 20°N, and so on till 90°N (which is the North Pole). Similarly, there are latitudes in the Southern Hemisphere. These are designated as degrees south (°S), and 90°S is the South Pole.
The longitudes are identified with the help of degrees. Prime meridian represents the zero degrees longitude. In the Eastern Hemisphere, the longitudes are designated as degrees east (°E), e.g. 10°E, 20°E, and so on till 180°. Same is the case with the Western Hemisphere. Further, the degrees are divided into minutes and minutes into seconds.
Please note: For a minute, the symbol is an apostrophe (‘) and for a second, the symbol is a double apostrophe (“). So, 60′ (60 minutes) make up a degree and 60″ (60 seconds) make up a minute. In the same manner, the 30’ means half a degree and 40” means two-thirds of a minute.
Importance of Latitudes and Longitudes
Two points on earth can lie at the same latitude but still be far away from each other. Also, two distant points may lie on the same longitude. But only one point lies on a particular pair of latitude and longitude. So latitudes and longitudes are helpful in locating a point on earth.
Globe - Latitudes and Longitudes
Important Latitudes and Longitudes
The Arctic Circle and the Tropic of Cancer are the special latitudes in the Northern Hemisphere. They are situated at 66 1/2° N and 23 1/2° N respectively. On the other hand, the Antarctic Circle and the Tropic of Capricorn are the special latitudes in the Southern Hemisphere. They are situated at 66 1/2° S and 23 1/2° S respectively.
Heat Zones
The area between the Tropic of Cancer and the Tropic of Capricorn receives the maximum heat from the Sun. This region is known as the Torrid Zone. The area between the Arctic Circle and the Tropic of Cancer in the Northern Hemisphere, and that between the Antarctic Circle and the Tropic of Capricorn in the Southern, have moderate temperatures. These regions are the Temperate Zones.
Lastly, the area north to the Arctic Circle and that south to the Antarctic Circle are close to the Poles and receive the sunlight of very low intensity. So it is very cold here. These regions are called the Frigid Zones. The Frigid Zones, the Temperate Zones, and the Torrid Zone are called the Heat Zone