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Science > Physics Exam Review > Flashcards

Physics Exam Review Flashcards

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1
Q

Electrostatics

A

the study of electrical charges that move very little

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2
Q

Neutral

A

term referring to matter not having a negative or positive electric charge

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3
Q

Insulator

A
  • a material that does not allow electric charges or heat to move freely on or through it
  • hold e- tight
  • almost no room
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4
Q

Conductor

A
  • a material that allows electric charges or heat to move freely on or through it
  • Conductor (Metal) - loose valance e-
  • lots of shell room
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5
Q

Metal

A
  • a chemical element such as aluminum, gold or iron

- very ductile and a good ability to conduct heat and electricity

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6
Q

Non-Metal

A
  • a chemical element such as oxygen or sulfur

- non-metals do not posses the properties of metals

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7
Q

Law of attraction and repulsion

A

a law stating that like electric charges repel and unlike electric charges attract

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8
Q

Electroscope

A

a device detecting the presence of electric charge

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9
Q

Charging by contact

A
  • start with charged object

- transfer to another object

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10
Q

Charging by induction

A
  • not actually charged

- create a charged area in balance

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11
Q

Charging by friction

A
  • e- are ripped off

- to work well - use an insulator

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12
Q

Electrophorus

A

an instrument for generating static electricity by means of induction

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13
Q

Lighting rod

A

a metal rod or wire attached to a building to prevent lightning damage by conducting the elections to the ground

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14
Q

Cell

A

a usually microscopic structure containing nuclear and cytoplasmic material enclosed by a semipermeable membrane and, in plants, a cell wall; the basic structural unit of all organisms.

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15
Q

Circuit

A

a path over which an electric current flows

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16
Q

Potential difference/Volt

A
  • the difference in electric potential energy per coulomb of charge at one point in a circuit compared to the potential energy per coulomb of charge at another point in the circuit
  • the unit of potential difference
17
Q

Parallel Circuit

A

Parallel - multiple paths
Current (I) - splits up, still adds to total current (I)
Voltage (V) - same everywhere
Best for multiple applications - large electron
- house

18
Q

Series Circuit

A

Series - single path for I
I - same everywhere
V - add up to power supply
- simple circuits: toys or one function tool/applications

19
Q

Electromotive force

A

a source of energy that can cause a current to flow in an electrical circuit or device

20
Q

Photoelectric

A

pertaining to the electronic or other electric effects produced by light.

21
Q

Thermoelectric

A

term applied to the use of heat to generate electricity

22
Q

Piezoelectric

A

electricity, or electric polarity, produced by the piezoelectric effect.

23
Q

Chemo electric

A

tba

24
Q

Grounding

A

to connect a conductor through some conducting material directly to the ground, or Earth

25
Q

Resistance/Ohm

A
  • potential difference across the load

- a unit of electrical resistance

26
Q

Ohm’s Law

A

a law stating that the ratio of the potential difference between the ends of a conductor and the current flowing in the conductor is constant

27
Q

Battery

A

a combination of electric cells that produce a potential difference

28
Q

Load

A

in an electric circuit a device that resist the flow of current and converts electrical energy to another form of energy
- example: light bulb

29
Q

Current/Ampere

A
  • a flow of electric charge

- basic unit for measuring the strength of an electric current

30
Q

Charge/Coulomb

A
  • a term referring to matter having a negative or positive charge
  • the unit of electric charge
31
Q

Energy/Joule

A
  • the unit of energy
32
Q

Electromagnetic

A

the arrangement by wavelength of the different forms of electromagnetic radiation

Science (4 decks)

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