The Prime Meridian, the Equator, and the Tropics The equator, the Tropic of Cancer, the Tropic of Capricorn, and the prime meridian are four of the most important imaginary lines running across the Earth's surface. They all pass through the center of the planet, but they do so at different latitudes: the equator is on the equator, but it can be anywhere from 67 to 93 miles (110 to 150 km) apart; the tropics are where the equator and a parallel line cross each other, and they can be anywhere from 90 degrees north or south of the equator - namely, between the poles and the mid-latitudes. These lines have special significance in navigation and distance measurement.
The term "tropic" comes from the Greek word for turn, because these are the regions of the world within which the sun turns around the earth during the course of a year. Thus, the tropics are the places on Earth where the sun is always rising over the east coast and setting over the west coast.
These are also the areas of the world that experience the greatest amount of daylight throughout the year. In fact, when viewed from space, the entire surface of Earth takes on a lopsided appearance because everything is tilted toward the sun during the summer months.
Four and five Tropical Regions (Tropic of Cancer and Tropic of Capricorn) Not only are the imaginary lines 23.5 degrees distant from the equator, but so is the whole space between them. The planet's area is known as the "Tropical Zone" or "Torrid Zone." The location of four of the five great circles is determined by the tilt of the Earth. As the Earth rotates on its axis, the north pole is always pointed toward the stars, while the south pole is always facing away from them.
The word "tropics" comes from Latin tropicalia meaning "pertaining to a region around a tropical climate." The term was first used in 1775 by Edmond Halley, who was trying to explain changes observed in the orbits of certain planets around the Sun. Today, we know that all regions with average temperatures above 18 degrees Celsius (64 degrees Fahrenheit) are called tropical.
The term "tropical zone" is also used to describe the areas on our planet where this type of climate is found. Although the word itself is not defined, usually it refers to the area between 20 and 35 degrees north or south of the equator.
However, the tropics are not just any old place where it's hot all the time; instead, they're a unique environment with its own features. The three main zones of the tropics are the tropical rainforest, the savanna, and the coral reef.
The Tropic of Cancer is one of the five great circles of latitude (imaginary lines that circle the Earth) that are frequently depicted on maps. The Tropic of Cancer is an imaginary line that intersects the Equator at an angle of 23.50 degrees north. The axis of rotation for planets except Earth goes through this point, so it is important in cartography.
It is named after Cancer, the Zodiac sign that marks its eastern border. Astronomically, however, the tropics are areas of high solar radiation where Earth's rotational axis is most inclined toward the Sun. Thus, the tropics are the opposite of the Antarctic polar region where Earth's axis is most inclined away from the Sun. In fact, only 5% of Earth is covered by ice.
Cancer is a cardinal sign, which means that it forms a boundary between other zodiacal signs. It is composed of two animals: the Crab and the Tiger. Together, they represent how death and destruction can sometimes bring about new life. Cancer also represents emotions and feeling. Humans have a heart chakra, which is located in the chest area above the diaphragm. This is the main channel through which we express emotion - through our hearts!
The name "tropic" comes from Latin meaning "turning place".
At 23.5 degrees south of the equator, the Tropic of Capricorn mirrors the Tropic of Cancer. The Tropics of Cancer and Capricorn are both imaginary lines that define an area on Earth known as the Tropics. They mark the points on the surface of Earth where the axis of the planet is most inclined toward or away from the Sun.
These lines divide the world into two equal parts: the northern hemisphere, which lies north of the Tropic of Capricorn; and the southern hemisphere, which lies south of it. The orientation of each region with respect to the equator determines how much sunlight and heat it receives during different seasons of the year.
The term "tropical" means relating to or being a part of a tropical zone or tropics. The tropics are the highest latitudes where there is sufficient light and heat for life to exist without artificial support. The word "tropical" is derived from Latin tropicalis meaning belonging to or related to the tropics.
In astronomy, the tropics are the belts of the earth where the sun causes daily cycles of light and darkness. These are called the diurnal tropics, because the sun is directly over a point on either side of the equatorial plane at any given time.
The Tropic of Cancer is an imaginary line that runs across the center of India at an angle of 23.50 degrees north of the Equator. It passes through the cities of Calcutta and Bombay.
The term "tropic" here means a region in which there are changes in climate and where plants and animals live at different temperatures from the polar regions to the equator. The Indian Ocean is a tropical ocean, for example.
The name comes from the Greek word "tropikos", which means "turning". The sun travels east to west across the sky, but around the earth it turns north to south. Because the axis about which the earth spins is not straight, but wobbly, the orbit in which it moves around the sun is not a straight line, but an ellipse with the Sun at one of its foci.
As the Earth orbits the Sun, the area between the tropics experiences two seasons: summer and winter. The tropics themselves remain constant in temperature year round; any variation in temperature occurs only near the poles or equator.
The only parts of the world that lie within the tropics are North America, South America, Africa, and Australia.
The latitude ranges from 0 degrees (the equator) to 90 degrees north and south (the poles). Because the lines travel parallel to each other, a line linking all locations of the same latitude is termed a parallel. The equator is the only parallel that is also a large circle. The Cancer Tropic is located at 23.5 degrees North. Therefore, it is not a great circle.
The tropics are areas on Earth where the sun is directly over the center of the planet. They are defined as the region of the earth between the points where the average annual temperature is equal to either 15 degrees Celsius (59 degrees Fahrenheit) or 32 degrees Celsius (0 degrees Fahrenheit). Within this zone, the sun's influence determines how much heat is available throughout most of the year, causing significant seasonal changes in climate.
The term "tropical" may imply that there is something special about these regions that makes them different from other parts of the world. This is not the case; any area with an average yearly temperature above 15 degrees Celsius (59 degrees Fahrenheit) is classified as tropical, including the sub-tropics and tropics. What does make the tropics unique is their ability to support life due to their intense heat and high levels of carbon dioxide gas. All plants and most animals cannot live outside of this zone because they need sunlight to survive and heat to function properly. However, some species have evolved ways to adapt to the conditions in the tropics.