Tibetan plateau: The planet’s highest plateau, it has an average elevation of 4,500 meters (nearly 14,800 feet). Sometimes a single symptom - especially a general one, such as fever or pain - can be a sign of any of many different types of injury or disease. Symptom: A physical or mental indicator generally regarded to be characteristic of a disease. When they become hot enough, stars will emit light and sometimes other forms of electromagnetic radiation.
Stars develop when gravity compacts clouds of gas. Star: The basic building block from which galaxies are made. Sea level: The overall level of the ocean over the entire globe when all tides and other short-term changes are averaged out. Unlike lakes and streams, seawater - or ocean water - is salty. Sea: An ocean (or region that is part of an ocean). Right angle: A 90-degree angle, equivalent to any inside corner on a square. Pressure: Force applied uniformly over a surface, measured as force per unit of area. It’s sometimes referred to as “tableland.” Several of its edges tend to be steeply sloped (cliffs).
Plateau: A flat area of land, high above sea level. Planet: A large celestial object that orbits a star but unlike a star does not generate any visible light. All animals and many microorganisms need oxygen to fuel their growth (and metabolism). Oxygen: A gas that makes up about 21 percent of Earth's atmosphere. Nausea: The feeling of being sick to one's stomach, as though one could vomit. A gene with this change is referred to as a mutant. Others can be triggered by outside factors, such as pollution, radiation, medicines or something in the diet. mutate) Some change that occurs to a gene in an organism’s DNA. People who work in this field are geneticists. The field of science dealing with these biological instructions is known as genetics. Genetic: Having to do with chromosomes, DNA and the genes contained within DNA. Each degree equals one three-hundred-and-sixtieth of the circumference of a circle. People who work in this field are called astronomers.ĭegree: (in geometry) A unit of measurement for angles.
DEFNITION OF ALTITUDE GEOMETRY FULL
It’s hard for humans to live in the thin air at high altitudes - but a specific genetic mutation may have helped people survive high on the Tibetan Plateau.Ĭheck out the full list of Scientists Say.Īir pressure: The force exerted by the weight of air molecules.Īngle: The space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.Īstronomy: The area of science that deals with celestial objects, space and the physical universe. If the star is exactly overhead, its altitude is 90 degrees. For instance, if a star is right on the horizon, its altitude is 0 degrees. In this case, the word describes the angle between the horizon and some object in the sky. TemmingĪltitude has a third definition in astronomy. The altitude of a triangle is a line that runs from one point to the opposite side, meeting that side at a right angle. That height is found by drawing a line from one point on the triangle to the opposite side, such that the line meets that side at a right angle. Here, the word refers to the height of a triangle. The second use of “altitude” appears in geometry. But sometimes hikers climbing up mountains get sick as they go farther and farther up. People on planes tend not to get altitude sickness because the air inside an airplane has plenty of oxygen. This is due to the lower oxygen levels found high up. Mild symptoms include nausea and light-headedness. If you travel to a high altitude fast, you might get altitude sickness. Altitude can also be used to describe heights on other planets. And if you’re at the top of a mountain, you will be at a higher altitude than when you’re next to the ocean. Planes, for instance, fly at an altitude of several kilometers (miles). First, it can refer to how high something is above sea level on Earth. The word “altitude” has a few different meanings.
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