The reason why there are 90 lines of longitude between the equator and the North Pole is because of how lines of longitude, also known as meridians, are defined.
Longitude lines run from the North Pole to the South Pole and are used to measure the east-west position of a location on the Earth's surface. The Prime Meridian, located at 0 degrees longitude, is the starting point from which all other longitudes are measured. It passes through the Royal Observatory in Greenwich, England.
The Earth is divided into 360 degrees of longitude (a complete circle), and since the Prime Meridian represents 0 degrees and the International Date Line represents 180 degrees (180 degrees in the opposite direction from the Prime Meridian), the remaining 180 degrees are distributed on each side of the Prime Meridian.
When we consider the lines of longitude between the equator and the North Pole, we are looking at a quarter of the Earth's circumference. Since the Earth is a sphere, its circumference is 360 degrees, and a quarter of that is 360/4 = 90 degrees.
Thus, there are 90 lines of longitude between the equator and the North Pole, each one representing one degree of longitude, making up a quarter of the Earth's circumference.
The North Pole is located at an angle of 90°. Here, it is integral to denote which hemisphere the latitude is located in, given that there will be two occurrences of the same degree–one in either half. The 90°N latitude, thus, denotes the North Pole.
Sunlight hits the Earth most directly at the Equator. The curve of the Earth means that sunlight is spread over a wider area the further you move from the Equator. Sunlight hits a smaller surface area at the Equator so heats up quickly compared to the poles.
emperature decreases progressively from equator towards the poles because it receives less sunlight. As we go away from equator the temperature decreases and in poles it becomes very little or none.
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Answer:
The reason why there are 90 lines of longitude between the equator and the North Pole is because of how lines of longitude, also known as meridians, are defined.
Longitude lines run from the North Pole to the South Pole and are used to measure the east-west position of a location on the Earth's surface. The Prime Meridian, located at 0 degrees longitude, is the starting point from which all other longitudes are measured. It passes through the Royal Observatory in Greenwich, England.
The Earth is divided into 360 degrees of longitude (a complete circle), and since the Prime Meridian represents 0 degrees and the International Date Line represents 180 degrees (180 degrees in the opposite direction from the Prime Meridian), the remaining 180 degrees are distributed on each side of the Prime Meridian.
When we consider the lines of longitude between the equator and the North Pole, we are looking at a quarter of the Earth's circumference. Since the Earth is a sphere, its circumference is 360 degrees, and a quarter of that is 360/4 = 90 degrees.
Thus, there are 90 lines of longitude between the equator and the North Pole, each one representing one degree of longitude, making up a quarter of the Earth's circumference.
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The North Pole is located at an angle of 90°. Here, it is integral to denote which hemisphere the latitude is located in, given that there will be two occurrences of the same degree–one in either half. The 90°N latitude, thus, denotes the North Pole.
Sunlight hits the Earth most directly at the Equator. The curve of the Earth means that sunlight is spread over a wider area the further you move from the Equator. Sunlight hits a smaller surface area at the Equator so heats up quickly compared to the poles.
emperature decreases progressively from equator towards the poles because it receives less sunlight. As we go away from equator the temperature decreases and in poles it becomes very little or none.
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