SCIENCE GLOSSARY - PART 5
201. Mach number: It is a measure of the speed of an object, specially an aircraft. If the Mach number exceeds one, the object is said to be moving at a supersonic speed.
202. Machine: Any device that makes doing work easier
203. Magnet: An object that attracts certain other materials, particularly iron and steel
204. Magnetic domain: A group of atoms whose magnetic fields align, or point in the same direction. Magnetic materials have magnetic domains, whereas nonmagnetic materials do not.
205. Magnetic field: An area surrounding a magnet within which the magnet can exert a force. Magnetic fields are concentrated into a pattern of lines that extend from the magnet’s north pole to its south pole
206. Magnetic pole: One of two ends of a magnet where the magnetic force is the strongest. Every magnet has two poles
207. Magnetism: The force exerted by a magnet. Opposite poles of two magnets attract, or pull together, whereas like poles of two magnets repel, or push apart
208. Manometer: An instrument for measuring the pressure of liquids (including human blood pressure) or gases.
209. Mass: A measure of how much matter an object is made of.
210. Matter: Anything that has mass and volume. Matter exists ordinarily as a solid, a liquid, or a gas
211. Mechanical advantage: The number of times a machine multiplies the input force; output force divided by input force
212. Mechanical energy: A combination of the kinetic energy and potential energy an object has
213. Mechanical wave: A wave, such as a sound wave or a seismic wave, that transfers kinetic energy through matter
214. Mechanics: It is the study of movement of material bodies.
215. Medium: A substance through which a wave moves.
216. Meridian: It is an imaginary circle passing through both the poles of a celestial sphere, It is also the imaginary plane passing through the Earth’s axis.
217. Metal: An element that tends to be shiny, easily shaped, and a good conductor of electricity and heat.
218. Metallic bond: A certain type of bond in which nuclei float in a sea of electrons.
219. Metalloid: An element that has properties of both metals and nonmetals.
220. Meteorology: It is the study of climate and weather patterns, with the aim of trying to explain, predict and change them.
221. Mica: It is a group of silicate minerals having layered structure.
222. Microscope: It is an instrument for magnification with high resolution for detail.
223. Microwaves: Part of the electromagnetic spectrum that consists of waves with higher frequencies than radio waves, but lower frequencies than infrared waves
224. Mirage: It is the illusion seen in hot climate of water on the horizon, or of distant objects being enlarged.
225. Missile: It is guided unmanned weapon which is usually propelled by a rocked.
226. Mixture: A combination of two or more substances that do not combine chemically but remain the same individual substances. Mixtures can be separated by physical means
227. Moderator: It is a substance that is used to slow down neutrons emitted in a nuclear fission reaction.
228. Molecule: A group of atoms that are held together by covalent bonds so that they move as a single unit
229. Molecule: it is a group of one or more atoms bonded together, a basic participle of matter.
230. Momentum: A measure of mass in motion. The momentum of an object is the product of its mass and velocity
231. Momentum: It is a property dependent on the mass and velocity of a body.
232. Monomer: One of many small, repeating units linked together to form a polymer
233. Motion: A change of position over time
234. Nanotechnology: The science and technology of building electronic circuits and devices from single atoms and molecules
235. Nautical mile: It is a unit of measurement, it measures distances across seas and oceans.
236. Net force: The overall force acting on an object when all of the forces acting on it are combined
237. Neutral: Describing a solution that is neither an acid nor a base. A neutral solution has a ph of 7.
238. Neutron: A particle that has no electric charge and is located in an atom’s nucleus.
239. Nonmetal: An element that is not a metal and has properties generally opposite to those of a metal.
240. Nuclear fission: it is the process whereby an atomic nucleus breaks up with the emissions of several neutrons.
241. Nuclear reactor: It is the central component of a nuclear power station that generated nuclear energy under controlled conditions for use as a source of electrical power.
242. Nuclear waste: It is the radio-active and toxic by-products of the nuclear-energy and nuclear-weapons industries.
243. Nucleic acid: One of several carbon-based molecules that carry an organism’s genetic code. One of the nucleic acids DNA- contains the information needed to construct proteins
244. Nucleus: The central region of an atom where most of the atom’s mass is found in protons and neutrons
245. Ohm: The SI unit of electrical resistance, named after Georg Simon Ohm.
246. Opaque: It described a substance which does not allow light to pass through it.
247. Optics: It is the study of nature and properties of light.
248. Organic compound: A compound that is based on carbon
249. Oscillation: One completer to and-fro movement of a vibrating object or system.
250. Parallel circuit: A circuit in which current follows more than one path. Each device that is wired in a parallel circuit has its own path to and from the voltage source
202. Machine: Any device that makes doing work easier
203. Magnet: An object that attracts certain other materials, particularly iron and steel
204. Magnetic domain: A group of atoms whose magnetic fields align, or point in the same direction. Magnetic materials have magnetic domains, whereas nonmagnetic materials do not.
205. Magnetic field: An area surrounding a magnet within which the magnet can exert a force. Magnetic fields are concentrated into a pattern of lines that extend from the magnet’s north pole to its south pole
206. Magnetic pole: One of two ends of a magnet where the magnetic force is the strongest. Every magnet has two poles
207. Magnetism: The force exerted by a magnet. Opposite poles of two magnets attract, or pull together, whereas like poles of two magnets repel, or push apart
208. Manometer: An instrument for measuring the pressure of liquids (including human blood pressure) or gases.
209. Mass: A measure of how much matter an object is made of.
210. Matter: Anything that has mass and volume. Matter exists ordinarily as a solid, a liquid, or a gas
211. Mechanical advantage: The number of times a machine multiplies the input force; output force divided by input force
212. Mechanical energy: A combination of the kinetic energy and potential energy an object has
213. Mechanical wave: A wave, such as a sound wave or a seismic wave, that transfers kinetic energy through matter
214. Mechanics: It is the study of movement of material bodies.
215. Medium: A substance through which a wave moves.
216. Meridian: It is an imaginary circle passing through both the poles of a celestial sphere, It is also the imaginary plane passing through the Earth’s axis.
217. Metal: An element that tends to be shiny, easily shaped, and a good conductor of electricity and heat.
218. Metallic bond: A certain type of bond in which nuclei float in a sea of electrons.
219. Metalloid: An element that has properties of both metals and nonmetals.
220. Meteorology: It is the study of climate and weather patterns, with the aim of trying to explain, predict and change them.
221. Mica: It is a group of silicate minerals having layered structure.
222. Microscope: It is an instrument for magnification with high resolution for detail.
223. Microwaves: Part of the electromagnetic spectrum that consists of waves with higher frequencies than radio waves, but lower frequencies than infrared waves
224. Mirage: It is the illusion seen in hot climate of water on the horizon, or of distant objects being enlarged.
225. Missile: It is guided unmanned weapon which is usually propelled by a rocked.
226. Mixture: A combination of two or more substances that do not combine chemically but remain the same individual substances. Mixtures can be separated by physical means
227. Moderator: It is a substance that is used to slow down neutrons emitted in a nuclear fission reaction.
228. Molecule: A group of atoms that are held together by covalent bonds so that they move as a single unit
229. Molecule: it is a group of one or more atoms bonded together, a basic participle of matter.
230. Momentum: A measure of mass in motion. The momentum of an object is the product of its mass and velocity
231. Momentum: It is a property dependent on the mass and velocity of a body.
232. Monomer: One of many small, repeating units linked together to form a polymer
233. Motion: A change of position over time
234. Nanotechnology: The science and technology of building electronic circuits and devices from single atoms and molecules
235. Nautical mile: It is a unit of measurement, it measures distances across seas and oceans.
236. Net force: The overall force acting on an object when all of the forces acting on it are combined
237. Neutral: Describing a solution that is neither an acid nor a base. A neutral solution has a ph of 7.
238. Neutron: A particle that has no electric charge and is located in an atom’s nucleus.
239. Nonmetal: An element that is not a metal and has properties generally opposite to those of a metal.
240. Nuclear fission: it is the process whereby an atomic nucleus breaks up with the emissions of several neutrons.
241. Nuclear reactor: It is the central component of a nuclear power station that generated nuclear energy under controlled conditions for use as a source of electrical power.
242. Nuclear waste: It is the radio-active and toxic by-products of the nuclear-energy and nuclear-weapons industries.
243. Nucleic acid: One of several carbon-based molecules that carry an organism’s genetic code. One of the nucleic acids DNA- contains the information needed to construct proteins
244. Nucleus: The central region of an atom where most of the atom’s mass is found in protons and neutrons
245. Ohm: The SI unit of electrical resistance, named after Georg Simon Ohm.
246. Opaque: It described a substance which does not allow light to pass through it.
247. Optics: It is the study of nature and properties of light.
248. Organic compound: A compound that is based on carbon
249. Oscillation: One completer to and-fro movement of a vibrating object or system.
250. Parallel circuit: A circuit in which current follows more than one path. Each device that is wired in a parallel circuit has its own path to and from the voltage source
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