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| Device that uses electromagnetic inductionto produce electric current. |
generator |
| Materials that are neither good conductors nor good insulators. |
semiconductors |
| Device used to manually open or close a circuit. |
switch |
| Current (amperage) in a conductor is directly proportional to voltage and inversely proportional to resistance; V=IR, (know how to work the problems) |
Ohm's law |
| Instrument used to measure amperage |
ammeter |
| a circuit with loads arranged in separate branches of the circuit so that the current is divided amoung them |
parallel circuit |
| an electric lamp that produces light by heating a thin piece of wire to a very high temperature |
incandescent lamp |
| a group of electrochemical cells connected together as a single source of current |
battery |
| a material that allows electric current to flow through it with no resistence at all |
superconductor |
| the unit used by electric companies to charge for electricity |
kilowatt hour |
| direct current and alternating current |
two types of electric current |
| occurs when electricity is given the opportunity to take a "short cut" through a circuit, avoiding the load |
short circuit |
| a hypothetical time scale devised by evolutionists that supposedly charts both the earth's history and the sequence of the rock layers in the earth's crust |
geological column |
| the belief that God called the universe and all that is in it into existence out of nothing or "ex nihilo" |
special creation |
| the false belief that the universe and all that is in it originated by natural process over billions of years |
evolution |
| What is the most important evidence against evolution in the fossil records? |
lack of transitional forms |
| the false belief that all geological processes have always proceeded at the same rate |
uniformitarianism |
| popularized the false idea of uniformitarianism |
Charles Lyell |
| popularized evolution with the book On the Origin of Species |
Charles Darwin |
| a hypothetical fossil that would show signs of evolving from one kind of organism into another, a "missing link" |
transitional form |
| German scientist who showed that the energy of an electromagnet wave is directly related to the wave's frequency |
Max Planck |
| states that all motion is relative to some reference point and that the speed of light is constant in relation to an observer |
theory of relativity |
| high frequency electromagnetic waves used in medicine, dentistry, and in airport security to "see" inside solid objects |
x ray |
| states that light has characteristicsof both particles and waves |
quatum theory of light |
| Scottish scientist who discovered that light consists of Electromagnetic waves |
James Clerk Maxwell |
| electromagnetic waves responsible for tanning and sunburn |
ultraviolet rays |
| a lens that is thicker in the middle than at the edges, causing light rays to be concentrated and objects to appear magnified |
convex |
| a lens that is thinner in the middle than at the edges, causing light rays to be spread out and objects to appear smaller |
concave |
| light is described as consisting of tiny bundles or "packets" of energy. These travel as electromagnetic waves |
photons |
| low frequency waves widely used for communication |
radio waves |
| the most powerful and pentrating form of electromagnetic radiation |
gamma rays |
| a device that uses reflected electromagnetic waves to measure the distenced and direction of faraway objects |
radar |
| electromagnetic waves sometimes referred to as "heat waves" |
infrared waves |
| is approximately 300,000 kilometers per second or 300,000 km/s |
speed of light in a vacuum |
| a combination of all the colors of light mixed together is perceived as this |
white |
| an arrangement of all forms of electromagnetic radiation in order of frequency and wavelength |
electromagnetic spectrum |
| American scientist who constructed the first laser |
Theodore Maymin |
| distance traveled in a given time |
speed |
| in physics, any chang in speed, in direction, or in both speed and direction |
acceleration |
| the SI unit of force |
newton |
| the pushing of pulling action of one object upon another |
force |
| the branchof physics that deals with objects in motion |
mechanics |
| a Greek philosopher whose often erroneous ideas about nature were accepted unquestioningly for almost 2000 years |
Aristotle |
| the Italian scientist who first demonstrated that the acceleration of a falling object does not depend on the mass of the object |
Galileo Galilei |
| the quantity of matter an object contains |
mass |
| the scientist who formulated the laws of motion and gravitation |
Sir Isaac Newton |
| What are the fundemental forces? |
strong nuclear force, weak nuclear force, electromagnetic force, and gravitational force |
| the speed of an object in a particular direction |
velocity |
| proposes the General Theory of Relativity, which contains a geometric explanation of gravity |
Albert Einstein |
| the tendency of matter to resist changes in motion |
inertia |
| piece of semiconductor containing an entire electronic circuit |
intergrated circuit |
| a branch of study of electricity that deals with the behavior and motion of electrons in a vacuum or in special materials |
electronics |
| modern device used to store electrical charges |
compassatator |
| versatile, computer-directed machine capable of being programmed to perform different tasks |
robot |
| a number system based on only two digits, 0 and1 |
binary numbers |
| the processof replacing some of the atoms of a semiconductor with atoms of another element in order to increase the conductivity of the semiconductor |
doping |
| large computer specifically designed to store and retrieve vast amounts of information |
mainframes |
| a semiconductor that contains many "holes" (missing electrons) in its crystal lattice |
p type semiconductor |
| semiconductor device that produces electric current when light strikes its surface |
photovoltacic cell |
| Advantages of intergrated circuits over separate circuit components |
much cheaper to manufacture, much more reliable, and extremely small |
| device that produced intense, coherent beams of monochromatic light by stimulated emission |
laser |
| semiconductor device that can perform the same functions of a vacuum-tube triode, such as acting as a "switch" and amplifying weak signals |
transistor |
| small, relatively inexpensive computer designed for home and business use |
personal computer |
| simple device that uses the laws of electrostatics to detect small electric charges |
electroscope |
| the most powerful type of computer, originally developed for military and scientific research |
supercomputers |
| a single intergrated circuit chip containing a complete central processeing unit of a coomputer |
microprocessor |
| a unit of information equal to eight bits |
byte |
| the actual physical components of a computer |
hardware |
| a type of vacuum tube designed so that the stream of electrons misses the anode and strikes the end of the glass tube, which is coated with a fluorescent material; the basis of the picture tube |
cathode-ray tube |
| two-electrode vacuum tube that allows current to flow through it in one directions by not the other |
diode |
| a low hill formed when a glacier overruns a moraine |
drumlin |
| a fan-shaped deposit of sediments that forms at the mouth of a river |
delta |
| the study of fossils |
palentology |
| the process by which rocks are broken down by the forces of nature |
weathering |
| a pile of debris left behind when a glacier melts |
moraine |
| general term for the carrying away of rock fragments such as by wind or running water |
erosion |
| a fan-shaped depoit of sediments at the mouth of a dry stream bed in the desert |
oluvial fan |
| the period of history during which much of the earth's high latitudes were apparently covered with glaciers |
Ice Age |
| the perserved remains of plants, animals, or humans in sedimentary rock |
fossil |
| the sediments carried by a stream |
load |
| the SI unit of power |
watt |
| possesses a negative charge |
electron |
| the unit of electric charge |
coulomb |
| the unit of electron current |
ampere |
| the unit used for measuring resistance |
ohm |
| a group of aligned atoms having a single magnetic field |
domain |
| electric charge can be imparted at a distance, without direct contect between the charged object and teh uncharged object |
induction |
| the process of diverting unwanted electrical charge directly into the earth |
grounding |
| a material that is strongly attracted to magnets and that has several umpaired electrons per atom |
ferromagnet |
| the unit used to measure the force with which an electric current flows |
volt |
| an atom or other object that has no overall electrical charge |
neutral |
| the mutual reinforcement of cancellation that occurs when two or more waves meet |
interference |
| a periodic back-and-forth motion that transmits energy through a substance |
wave |
| a change in sound frequency caused by an object's motion |
Doppler effect |
| the bending of the path of a wave as a result of a change in wave speed, such as when crossing a boundary between medium |
refraction |
| speeds faster than the speed of sound |
supersonic |
| the substance through which a wave transfers energy |
medium |
| the highest point if a wave |
crest |
| the SI unit of frequency, equal to 1 wave or cycle per second |
hertz |
| the number of complete waves that pass a given point in a second |
frequency |
| the spreading out of a wave after it passes trough a narrow opening |
defraction |
| the distance from one wave crest or trough to the next |
wavelength |
| the effect of frequency on the way out ear perceives sound |
pitch |
