define names of rays marine science
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- Definition of RAY. : any of an order (Rajiformes) of usually marine cartilaginous fishes (as stingrays and skates) having the body flattened dorsoventrally, the eyes on the upper surface, and enlarged pectoral fins fused with the head. ADVERTISEMENT.efinition of RAY. 1. a: any of the lines of light that appear to radiate from a bright object b: a beam of radiant energy (as light) of small cross section c (1) : a stream of material particles traveling in the same line (as in radioactive phenomena) (2) : a single particle of such a stream. 2.
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- Marine Zone: are divisions of the ocean. Oceanographers divide the ocean into two basic parts; the pelagic or open ocean, and the benthic or sea floor. The pelagic is divided into five broad zones according to how far down sunlight penetrates:
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electromagnetic radiation radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x-rays, and gamma rays. electromagnetic radiation. Energy that moves through space and matter both in the form of magnetic and electric waves and in the form of a stream of particles called photons.
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Electric ray The electric rays are a group of rays, flattened cartilaginous fish with enlarged pectoral fins, composing the order Torpediniformes. They are known for being capable of producing an electric discharge, ranging from 8 to 220 volts, depending on species, used to stun prey and for defense. There are 69 species in four families. Perhaps the best known members are those of the genus Torpedo, also called crampfish and numbfish. The device called a torpedo is named after it. The name comes from the La
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What is a Ray in Geometry? - Definition & Examples Ray: Definition and Examples. A ray is a line with an endpoint that extends infinitely in one direction. One of the most obvious examples is a sun's ray of light in space. Let's look at how light from the sun originates and travels:
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What is a Ray in Geometry? - Definition & Examples Lesson Summary. In geometry, a ray is a line with a single endpoint (or point of origin) that extends infinitely in one direction. An example of a ray is a sun ray in space; the sun is the endpoint, and the ray of light continues on indefinitely.
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Getting to Know the Five Simplest Geometric Objects Ray: A ray is a section of a line (kind of like half a line) that has one endpoint and goes on forever in the other direction. If its endpoint is point K and it goes through point S and then past it forever, you call the “half line” ray KS and write. See the above figure.
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"Study sets matching ""refraction light 1""" Refraction of light. Refraction. refracted ray. angle of refraction. index of refraction. the bending of light as it travels, at an angle, from a materi…. the ray that is bent upon entering a second medium. the angle between the normal and a refracted ray. the ratio of the speed of light in a vacuum to the speed of li…. Refraction. the bending of light as it travels, at an angle, from a materi….
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Stingrays Stingrays. Stingrays are a family of cartilaginous fish containing nine genera and about 70 species. They can be found in all tropical and sub-tropical seas, and there is also a freshwater-only sub-family-the river rays. A flattened body shape and disc-shaped pectoral fins help stingrays live and hide in sand and mud underwater. The famous barbed stinger on the tail is only used in self-defence, often when they are stepped on in shallow waters.
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- Note: Giant Manta Rays are commonly referred to as the Atlantic manta ray. However some specialists recognize two other species of manta, known as the lesser devil rays, Manta hamiltoni (Pacific manta ray) and Manta alfredi (Prince Alfred's manta ray).
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Lesson 3: Rays and Angles To name a ray, state its endpoint first and then any other point in the direction the ray is going. Use the symbol → over the letters, making sure that the endpoint of the symbol is over the letter that represents the endpoint of the ray.
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- An unpaired fin located along the midline of the dorsal surface. It may have both spines and rays or just rays and consist of a single lobe, two lobes that are joined or separate, or a series of free spines and a lobe with rays. An unpaired fin located along the midline of the dorsal surface.
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X ray X ray. X rays are a form of electromagnetic radiation with wavelengths that range from about 10−7 to about 10−15 meter. No sharp boundary exists between X rays and ultraviolet radiation on the longer wavelength side of this range.
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- Marine Zone: are divisions of the ocean. Oceanographers divide the ocean into two basic parts; the pelagic or open ocean, and the benthic or sea floor. the epipelagic, euphotic, or sunlit zone: the top layer of the ocean where enough sunlight penetrates for plants to carry on photosynthesis.
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Terms You Need To Know A ray is part of a line having one endpoint and a set of all points on one side of the endpoint. A ray is always named by using two letters of choice. The first letter must be the endpoint. We draw an arrow with an endpoint over the letters.
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Electric ray Perhaps the best known members are those of the genus Torpedo, also called crampfish and numbfish. (The device called a torpedo is named after it.) The name comes from the Latin torpere, to be stiffened or paralyzed, referring to the effect on someone who handles or steps on a living electric ray.
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Ray (optics) 1 An incident ray is a ray of light that strikes a surface. The angle between this ray and the perpendicular or normal to the surface is the angle of incidence.  The reflected ray corresponding to a given incident ray, is the ray that represents the light reflected by the surface.
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- DefinitionsThe movement of ocean water is one of the twoprincipal sources of discrepancy between dead reckonedand actual positions of vessels. Water in motion is called acurrent; the direction toward which it moves is called set,and its speed is called drift.
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Marine life Marine biology. Marine biology is the scientific study of the plants, animals, and other organisms that live in the ocean. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies species based on the environment rather than on taxonomy.
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List of threatened rays Sawfish are a less well known family of rays which have a long rostrum resembling a saw. Some species can reach 7 metres or 23 feet in length. All species of sawfish are either endangered or critically endangered as a result of habitat destruction and overfishing.
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- Supporting the scientific study of sharks, skates and rays since 1983.
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Radiation The international symbol for types and levels of radiation that are unsafe for unshielded humans. Radiation in general exists throughout nature, such as in light and sound. In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. This includes: electromagnetic radiation, such as heat, radio waves, visible light, x-rays, and gamma radiation (γ)
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- Rays are commonly named in two ways: 1  By two points. In the figure at the top of the page, the ray would be called AB because starts at point A and passes through B on its way to infinity. 2  By a single letter. The ray above would be called simply q.
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- Stingray Envenomation ». Stingrays (ie, elasmobranchs) are bottom-dwelling cartilaginous fish that have a flattened body, one or more stout spines on the tail, gill slits on the lower surface of the head, teeth modified into 2 large crushing plates, and no dorsal fin.
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Astronomy Answers AstronomyAnswerBook: The Position of the Sun and the Moon Angles are measured in degrees. A circle has 360 degress, and of course half of a circle is 180 degrees. OPPOSITE RAY - Any given point on a line determines exactly two rays, called opposite rays. This point is the common endpoint of the opposite rays. In the figure below ray PS and ray PQ are opposite rays, and P is the common endpoint. ANGLE - An angle is formed by two rays which begin at the same point (if the two rays lie on the same line, then it is called a straight angle).
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11 of the World's Best Fishing Spots Any list of top spots for big blue marlin has to include Bermuda, which has proved its bona fides over many decades. No country has won the one-day, global World Cup Blue Marlin Championship as often as Bermuda (eight times in 27 years), including the two largest fish ever caught in that event (1,195 and 1,189 pounds). The largest blue taken here (so far): 1,352 pounds. Beyond blues are white marlin, wahoo and yellowfin tuna.