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### 10 Cards in this Set

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 The process by which a nucleus splits into two or more smaller fragments, releasing neutrons and energy. What is Fission? (231) The method of creating electricity in nuclear power plants or in atomic bombs. Neutron particle accelerators are used and it is a process of man not nature. The area along a fault at which slippage first occurs, initiating an earthquake. What is the Focus? (568) An epicenter of a fault slippage in an earthquake. The cause of an acceleration, or change in an object's velocity. What is Force? (262) Net (F = M x A ), Balanced - cancel out each other = 0 , Unbalanced - combine to produce a net nonzero F. Any fuels formed from the remains of ancient plant and animal life. What are Fossil Fuels? (639) coal, crude oil, and natural gas ; finite natural resources The traces or remains of a plant or animal found in sedimentary rock. What are Fossils? (578) An imprint or cast of the former living thing turned into rock. The motion of a body when only the force of gravity is acting on it. What is Free Fall? (271) g = 9.8 m/s squared to maximum terminal velocity The number of vibrations that occur in a 1s time interval (Sound Theory) What is Frequency? (367) In Wave Theory an example would be the number of Crests that pass by in a 1 minute time interval. The force between two objects in contact that opposes the motion of either object. What is Friction? (265) Lubricant reduces this resistance such as oil in engines. The boundary between air masses of different densities. What is a Front? (613) Air masses that differ between warm and cold and have different densities that effect weather. An electrical device containing a metal strip that melts when current in the circuit becomes too great. What is a Fuse? (452) Prevents the overloading of circuits by being connected in series along the supply path and will only carry a current less than the appliance rating.