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Physical Science 2k17 Lit flashcards > Electricty > Flashcards

Electricty Flashcards

1
Q

Where are electrical charges

A

everywhere

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2
Q

What produces electrical fields

A

Charged objects

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3
Q

How many protons and electrons are in a half millimeter crystal

A

69 Quintillion

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4
Q

Why doesn’t everything exhibit electrical characteristics

A

Large numbers of evenly distributed charge

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5
Q

What is Static Electricity

A

an accumulation of like charges in one place

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6
Q

What is electrical current

A

Large numbers of like charges flow together in some direction

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7
Q

What does the word static come from

A

A Greek word meaning standing still or at rest

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8
Q

What is the first way of accumulating charges

A

Friction

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9
Q

What is a second way charges can accumulate

A

Conduction

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10
Q

What is third way of accumulating charges

A

Induction

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11
Q

What are metals called that have high electrical conductivity called

A

Conductors

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12
Q

What are substance that do not conduct energy called

A

Insolators

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13
Q

What is electrical ground

A

A neutrally charged object or thing

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14
Q

What is static discharge

A

When a large enough electric field will ionize nearby air forming a conducting channel that results i sparks or static or static discharge

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15
Q

What happens during static discharge

A

Study with mom

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16
Q

What is O3

A

Ozone

17
Q

What are channels of negative charges called

A

leaders

18
Q

Study what causes lightning

A

ook

19
Q

What are a channel of positive ground ions called

A

streamers

20
Q

What is a return strike

A

the lightening crack

21
Q

How many amps can there be in a lightening strike

A

30k to 100k

22
Q

What is induction

A

Static electricity accumulating when a charged object comes near another object forcing the charges in the second object to crowd together

23
Q

What is electric current

A

flowing charges in wires which are negative electrons

24
Q

What are conducting electrons

A

Freely moving electrictrons

25
Q

What is electric current very similar to

A

The movement of water through pipes

26
Q

What is a filiment

A

That lil wire in a light bulb

27
Q

What is a resistor

A

Any device that makes in the circuit that makes it harder for current to flow

28
Q

What causes electric current to flow

A

Voltage difference is the negative and positive terminals of the battery

29
Q

What direction does electricity flow

A

backwards

30
Q

What is mathematically identical to positive charges flowing toward negative

A

Electrons flowing toward positive

31
Q

W Hat is a coulombs

A

a measure of electric current

32
Q

What are the two forms electrical fields can take

A

Spherical and parallel

Physical Science 2k17 Lit flashcards (30 decks)

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