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Physics Year 8 > Topic 2 - (electricity) > Flashcards

Topic 2 - (electricity) Flashcards

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1
Q

What are materials that CAN conduct electricity called?

A

CONDUCTORS

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2
Q

What are materials that CAN’T conduct electricity called?

A

INSULATORS

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3
Q

What is an example of a conductor?

A
  • metals
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4
Q

What are some examples of insulators?

A
  • wood
  • plastic
  • glass
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5
Q

What is current?

A

The flow of charge around a circuit

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6
Q

What is charge measured in?

A

Coulombs

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7
Q

What is current measured by?

A

An ammeter

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8
Q

What does an ammeter do?

A

Measures the amount of coulombs of charge per second

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9
Q

What are joules of energy carried around a circuit by?

A

By coulombs of charge

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10
Q

What is energy measured in?

A

Joules

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11
Q

Does the switch have to be open or closed for a circuit to work?

A

Closed

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12
Q

What is voltage?

A

The amount of joules of energy per coulomb

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13
Q

What is voltage measured by?

A

A voltmeter

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14
Q

What is voltage measured in?

A

Volts

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15
Q

What is charge measured in?

A

Amps

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16
Q

What does a voltmeter do?

A

Measures the amount of joules if energy before and after going through it, OR the amount of energy pushing the charge

17
Q

What is a series circuit?

A

A circuit in which all the components are connected one after another, in a complete loop of conducting wire

18
Q

What is a parallel circuit?

A

A circuit in which each of the components is connected separately in its own loop of wire

19
Q

In a series circuit, what happens to the current?

A

The currant is the SAME in all places

20
Q

In a parallel circuit, what happens to the current?

A

It splits up

21
Q

In a series circuit, which routes can the current take?

A

Only 1 route

22
Q

In a series circuit, how will a break in the circuit effect the current?

A

The current will stop flowing anywhere

23
Q

In a parallel circuit, how will a break in the circuit effect the currant?

A

It won’t stop the current because it has different routes to go

24
Q

In a parallel circuit, which routes can the current take?

A

More than 1, depending on the circuit

25
Q

Is burning fossils a renewable or non renewable way of generating electricity?

A

Non renewable

26
Q

List some renewable methods of generating electricity:

A
  • wind
  • solar
  • hydroelectric
27
Q

What slows down the flow of energy?

A

Insulators

28
Q

What is the formula for hooke’s law?

A

F = K x E

29
Q

What do each of the symbols, - (f, k and e) - mean in the formula for hooke’s law?

A

F - force
K - Spring constant
E - extension

30
Q

What type of energy does a spring store?

A

Elastic potential energy

31
Q

What is elastic limit?

A

The amount to which an elastic object can be stretched before losing its original shape

Physics Year 8 (2 decks)

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