Flashcards
C
Flashcards do conjunto (20)
- 1CableTwo or three insulated wires surrounded by an outer layer of rubber or flexible plastic
- 2CameraAn instrument for photographing an object by using a converging lens to form a real image of the object on a film (or on electronic pixels) in a lightproof box
- 3Carbon-neutralA biofuel from a living organism that takes in from the atmosphere as much carbon dioxide as is released when the fuel is burnt
- 4Centre of massThe point where an object's mass may be thought to be concentrated
- 5Centripetal forceThe resultant force towards the centre of a circle acting on an object moving in a circular path
- 6Chain reactionA series of reactions in which one reaction causes further reactions, which in turn cause further reactions, etc. A nuclear chain reaction occurs when fission neutrons cause further fission, so more fission neutrons are released. These go on to produce further fission
- 7Circuit breakerAn electromagnetic switch that opens and cuts the current off if too much current passes through it
- 8CompressionSqueezing together
- 9CondenseTurn from vapour (gas) into liquid
- 10Conservation of energyEnergy cannot be created or destroyed
- 11Conservation of momentumIn a closed system, the total momentum before an event is equal to the total momentum after the event. Momentum is conserved in any collision or explosion provided no external forces act on the objects that collide or explode
- 12Contrast mediumAn X-ray absorbing substance used to show up a body organ so the organ can be seen on a radiograph
- 13Control groupIn an experiment to determine the effect of changing a single variable, a control is set up in which the independent variable is not changed therefore enabling a comparison to be made. In a survey, a control group is usually established to serve the same purpose
- 14ConvectionCirculation of a liquid or gas caused by increasing its thermal energy
- 15Convex (converging) lensA lens that makes light rays parallel to the principal axis converge to (i.e., meet at) a point; also referred to as a convex lens
- 16Cosmic microwave background radiationElectromagnetic radiation that has been travelling through space ever since it was created, shortly after the Big Bang
- 17Coulomb (C)The unit of electrical charge, equal to the charge passing a point in a (direct current) circuit in 1 second when the current is 1 A
- 18Count rateThe number of counts per second detected by a Geiger counter
- 19Critical angleThe angle of incidence of a light ray in a transparent medium that produces refraction along the boundary
- 20CT scannerA medical scanner that uses X-rays to produce a digital image of any cross-section through the body or a three-dimensional image of an organ
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- IGCSE Physics IGCSE (Keywords) FlashCards sobre C, criado por Julia Louis em 17-09-2020.
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- Julia Louis
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