Karteikarten
Test: Chapters 6, 7, and 9
Karten in diesem Stapel (61)
- 1positivewhen an object has more protons than electrons
- 2negativewhen an object has more electrons than protons
- 3neutralwhen an object has an equal amount of protons and electrons
- 4coulombsthe unit for charge
- 5What is the unit for charge?coulomb
- 6electric forcea push or pull caused by charges
- 7What holds protons together within the nucleus of an atom?strong nuclear force
- 8groundcan accept or give an infinite amount of electrons
*will neutralize any charge - 9arcingwhen a spark jumps between two objects
- 10What causes an electric charge and charges to move?a difference in charges
- 11Van de Graffa machine that separates charge
- 12electricitymoving electrons
- 13What is the symbol for ground?
- 14Why aren't birds electrocuted when they land on an electrical wire?-same amount of voltage goes through both legs
-if there are two different voltages the bird will be electrocuted - 15Two objects are charged, but don't arc. Why?they both have either a positive of negative charge
*if the charges were different there would be an arc - 16How is lightening formed?-electrons in ice crystals sink to the bottom of storm clouds
-electrons in the ground are repelled, making the ground positive
-protons are attracted to the electrons in the clouds
-electrons come down to meet the protons causing a flash of light and heat - 17static electricitywhen charge builds up on an object or material
- 18electroscopean instrument that detects charge
- 19open circuita circuit with a break in it; no electricity will flow
- 20closed circuitelectricity can flow through
- 21circuit diagrama short-hand way of drawing electric circuits
- 22voltagepushes electricity through a circuit
- 23currentthe flow of electricity through a circuit
- 24resistanceslows down the flow of electricity
- 25wiresallow electricity to flow
- 26batterypushes electricity through the circuit
- 27resistorslows down the flow of electricity
- 28light bulbused to create radiant energy
- 29switchcan turn electricity on and off
- 30What particles carry current?electrons
- 31alternating currentthe direction of the current goes back and forth
- 32Does the current in a battery alternate?no, a battery has a direct current
- 33direct currentthe current flows in one direction only
- 34When is alternating current generally used?when large amounts of electricity are being carried
- 35What is energy measured in?volts
- 36What is voltage related to?potential energy
- 37Why are electrical wires made out of copper?copper is a conductor so it is easy for electricity to move through the wire
- 38When does the voltage in a circuit decrease?any time it passes through an object that uses energy
- 39Do all batteries have the same voltage?yep
- 40What is the difference between different types of batteries?different types of batteries contain different amounts of energy
*AAA contain the least - 41What elements are used to make rechargeable batteries?nickel and cadmium
- 42Ampsunits for current
- 43What is current measured in?amps
- 44Ohmsunit for resistance
- 45What is resistance measured in?ohms
- 46conductormaterials that allow electric charges to flow through them easily
- 47What are examples of conductors?metals
*especially copper - 48insulatormaterials that do not allow electric charges to flow through them easy
- 49What are some examples of insulators?-clay
-wood
-rubber
-water - 50semiconductorsmaterials that act as resistors but do not stop voltage
- 51Why does wiring in homes have an insulator wrapped around it?so that electricity can not leave the wire and so that you will not burned if you touch the wire
- 52What is the role of Argon in a light bulb?Argon does not react with tungsten because it is a noble gas
- 53Why is tungsten used in light bulbs?Tungsten can reach incredibly high temperatures without melting
- 54series circuitelectricity has one path to flow through
- 55parallel circuitelectricity has two or more paths to flow through
- 56What type of circuits are commonly used in homes?parallel circuits
- 57What are advantages to using parallel circuits in homes?-multiple items can be turned on at once
-every outlet has the same voltage - 58What happens when to many things are plugged into one outlet?there are not enough amps to make things work so the wires begin to overheat and the breaker will stop the flow of electrons through the wire
- 59short circuita circuit path with little to no resistance
- 60fuses / circuit breakersprovide protection from the high amounts of current in a short circuit
- 61How much current is allowed to flow through a circuit breaker without it stopping the current?15 to 20 amps
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- Beschreibung
- Freshman (Integrated Science Honors) Karteikarten am Test: Chapters 6, 7, and 9, erstellt von Asher am 06/04/2015.
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- Asher
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