Question

explain the following terms
equator
earths grid
heat zone
great circle
time zones
prime meridian

Answer 1

Equator : the horizontal line in the half way between the north pole and South pole is called equator.

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Answer 2

Explanation:

1. Equator: The equator is a line which is not real drawn around a sphere or planet, such as the Earth. ... The equator is halfway between the North Pole and the South Pole. There, the surface of the planet is parallel to the axis of rotation. The equator divides the surface into the northern hemisphere and the southern hemisphere.
2. Earth's grid: In order to locate correctly each and every place on the surface of the Earth, a network of horizontal and vertical lines is drawn on the globe. This network of systematic lines is called the 'Earth Grid'. ... The Equator divides the Earth into two halves, called the 'Northern Hemisphere' and the 'Southern Hemisphere'.
3. Heat zone: Heat zones are the different zones of the earth, where the sun's rays fall differently, thus causing different climate patterns. These zones are called the Torrid Zone, the two Temperate Zones, and the two Frigid Zones. ... The Temperate Zones maintain a moderate climate, and the Frigid Zones are extremely cold.
4. Great circle: A great circle, also known as an orthodrome, of a sphere is the intersection of the sphere and a plane that passes through the center point of the sphere. A great circle is the largest circle that can be drawn on any given sphere. A Great Circle is any circle that circumnavigates the Earth and passes through the center of the Earth. A great circle always divides the Earth in half, thus the Equator is a great circle (but no other latitudes) and all lines of longitude are great circles. For example, the Prime Meridian at 0° is half of a great circle. On the opposite side of the globe is the International Date Line at 180°. ... The only line of latitude, or parallel, characterized as a great circle is the equator because it passes through the exact center of the Earth and divides it in half.
5. Time zones: A time zone is a region of the globe that observes a uniform standard time for legal, commercial, and social purposes. ... Many land time zones are skewed toward the west of the corresponding nautical time zones. This also creates a permanent daylight saving time effect. A time zone is one of the areas into which the world is divided according to what time it is there. For example, the Pacific time zone is two hours behind the Central time zone which is one hour behind the Eastern time zone.
6. Prime meridian: A prime meridian is the meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great circle. This great circle divides a spheroid into two hemispheres. The prime meridian is an imaginary line that is similar to the equator which divides the earth into eastern and western hemisphere. It is referred as ''Greenwich Meridian '' . It is a line of longitude in a geographic soodinate system at which longitude is defined to be 0° .

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