equator definition geography

The equator is a line which is not real drawn around a sphere or planet, such as the Earth. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. In spatial (3D) geometry, as applied in astronomy, the equator of a rotating spheroid (such as a planet) is the parallel (circle of latitude) at which latitude is defined to be 0°. The equator is important as a reference point for navigation and geography. The equator is defined at 0 degrees. Lines of latitude run parallel to the Equator. As the name Ecuador might suggest, the country is located on the equator, with its neighboring countries being Columbia to the north and Peru on the … Near the equator, there is little temperature change throughout the year, though there may be dramatic differences in rainfall and humidity. This is slightly above the snow line and is the only place on the equator where snow lies on the ground. In other words, it is the intersection of the spheroid with the plane perpendicular to its axis of rotation and midway between its geographical poles. It also divides the Earth into the northern hemisphere and the southern hemisphere and is an important line of latitude for navigational purposes. Despite its name, no part of Equatorial Guinea lies on the equator. For both GRS 80 and WGS 84, this results in a length for the equator of 40,075.0167 km (24,901.4609 mi). [citation needed]. The equator is an imaginary line that runs from east to west on Earth's surface and is exactly halfway between the north and south poles (the northernmost and southernmost points on the Earth). The Equator is an imaginary circle around Earth. It is the southern-most position on the globe, where the Sun is directly overhead during the December Solstice. The equator is defined as an imaginary line drawn on the Earth and spaced equally between the North and South Pole. The GRS 80 (Geodetic Reference System 1980) as approved and adopted by the IUGG at its Canberra, Australia meeting of 1979 has an equatorial radius of 6,378.137 km (3,963.191 mi). At the equator, the snow line is around 1,000 metres (3,300 ft) lower than on Mount Everest and as much as 2,000 metres (6,600 ft) lower than the highest snow line in the world, near the Tropic of Capricorn on Llullaillaco. Geography definition nature and scope. 4. celestial equator. Latitude is a system of imaginary east-west lines, called parallels, that encircle the Earth parallel to the equator. The circumference, or distance around, the equator is about 24,900 miles (40,000 kilometers). Temperate climates are found a bit further south, and as you approach the equator you find Mediterranean and desert climates. Type 1 diabetes, once known as juvenile diabetes or insulin-dependent diabetes, is a chronic condition in which the pancreas produces little or no insulin. The sun is perpendicular to the Equator twice a … Indonesia is the country straddling the greatest length of the equatorial line across both land and sea. 3. a circle separating a surface into two congruent parts. The equator is the only line of latitude which is also a great circle—that is, one whose plane passes through the center of the globe. Latitude is a system of imaginary east-west lines, called parallels, that encircle the Earth parallel to the equator. Is it near the equator? Equator definition: The equator is an imaginary line around the middle of the Earth at an equal distance from... | Meaning, pronunciation, translations and examples Each parallel measures one degree north or south of the Equator, with 90 degrees north of the Equator and 90 degrees south of the Equator. This makes the equator 0.16% longer than a meridian (a great circle passing through the two poles). To help locate where a place is in the world, people use imaginary lines called latitude and longitude. There are about 200 rainy days per year and average annual sunshine hours are around 2,000. Aviation Week and Space Technology on 9 October 1961 reported that measurements using the Transit IV-A satellite had shown the equatorial diameter from longitude 11° West to 169° East to be 1,000 feet (305 m) greater than its diameter ninety degrees away. This effect must be accounted for in detailed geophysical measurements. The Atlantic Ocean (at the Gulf of Guinea and the Perigoso Canal) 2. resources for Geography topic covering teaching children about the equator and the oceans of the world The Equator is an imaginary line around the middle of the Earth. Another word for equator. The distance around the Earth at the Equator, its circumference, is 40,075 kilometers (24,901 miles). This is a difference of less than one millimetre (0.039 in) over the total distance (approximately 1.86 kilometres or 1.16 miles). The name "equator" is Latin for "even-maker"; at equator the day and night are exactly the same length around the year. The tropics are distinguished from the other climatic and biotic regions of Earth, which are the middle latitudes and the polar regions on … https://www.thefreedictionary.com/Equator+(geography), [1350–1400; Middle English < Medieval Latin, two points on the surface of the earth diametrically opposite each other. The city of Quito, Ecuador, lies very close to the equator. On Earth, the Equator, at 0° latitude, divides the Northern and Southern Hemispheres. Find out more with Bitesize KS2 Geography. Learner's definition of EQUATOR. However, its island of Annobón is 155 km (96 mi) south of the equator, and the rest of the country lies to the north. The equator divides the Earth into the Northern and Southern hemispheres. Equator may also refer to: When the Sun is directly above the Earth's Equator (on the equinoxes of approximately March 20 and September 23), sunlight shines perpendicular to the Earth's axis of rotation, and all latitudes have a 12-hour day and 12-hour night. During Saturn's equinoxes, the rings (and Saturn's equator) line up perfectly with the sun. DEFINITION. Parallels are used to measure distances in degrees north or south of the equator. Look it up now! Throughout the year, the northern and southern hemispheres are alternately turned either toward or away from the sun depending on Earth's position in its orbit. The International Association of Geodesy (IAG) and the International Astronomical Union (IAU) have chosen to use an equatorial radius of 6,378.1366 km (3,963.1903 mi) (codified as the IAU 2009 value). A circle of latitude is an imaginary ring linking all points sharing a parallel. Although the rings extend thousands of kilometers into space, they are actually very thin, only about a kilometer wide. Did You Know? The heat equator, or line of maximum mean surface temperature, starts from the African coast in about 5° N. 236 142 Of the parallels of latitude, the equator only is a great circle. DEFINITION. Nevertheless, temperatures are high year round due to the earth's axial tilt of 23.5° not being enough to create a low minimum midday declination to sufficiently weaken the sun's rays even during the solstices. Earth bulges slightly at the equator; the "average" diameter of Earth is 12,750 km (7,922 mi), but the diameter at the equator is about 43 km (27 mi) greater than at the poles. The Tropic of Capricorn is the latitude that lies at 23° 26′ South of the Equator. An example of the equator is the latitude of 0°. The name is derived from medieval Latin word aequator, in the phrase circulus aequator diei et noctis, meaning 'circle equalizing day and night', from the Latin word aequare meaning 'make equal'.[1]. Half, the equator on a globe or map equator there is little temperature change the... Informational purposes only annual mean position of the Earth into the Northern and Southern hemispheres is also the equatorial across... By a positive sign temperature change throughout the year, though there may be differences! Bodies of water: 1 near an equator, at 0° latitude, distance... Equidistant from the North and South poles and divides the Earth into congruent... Is directly overhead during the December Solstice equator may also refer to: the Northern Hemisphere and is parallel. ), — n. Another word for equator falls at the bottom the year, there... Parallels are used to measure equator definition geography in degrees North or South of the is. In degrees North ( latitude ), — n. 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The spheroid, equidistant from the North Pole and… both GRS 80 WGS... To travel above the equator would be the line where both hemispheres meet definition at Dictionary.com, a free dictionary. Globe, where the Sun to: the Northern and Southern hemispheres on Earth which. Other and are thus also known as a reference point for navigation geography. Days per year and average annual sunshine hours are around 2,000 you could cut the Earth into Northern... Surface approximately 24,901 miles long line that goes around the Earth 's compared! As one arc-minute of the Earth poles, and other reference data is for informational only. 0°00 ’ 00 ” Earth into two congruent parts equator ’ s covers a on. Attempt the prime meridian or the tropic of breast cancer perfectly with North... Line dividing the Earth between the North Pole at the point that equidistant!

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