Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Year 8 Ms Lee 2024 Flashcards > Electricity > Flashcards

Electricity Flashcards

1
Q

What is static electricity?

A

Static electricity is when an object either gains or loses electric charge in the form of electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Can static electricity move?

A

No. Static electricity is a type of energy that can build up in one place but does not move.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Objects that lose electrons become ____ charged.

A

Positively (+)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Objects that gain electrons become ____ charged.

A

Negatively (-)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How is static electricity generated?

A

Electrons are passed from one object to another by rubbing them together (i.e. friction)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Charges that are the same _________ each other.

A

Repel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Charges that are different _________ each other.

A

Attract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What will happen when two negative charges are brought together?

A

They will repel.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What will happen when a negative and positive charge are brought together?

A

They will attract.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Describe current electricity.

A

When electrons move they carry electrical energy from one place to another.
This is called current electricity or an electric current.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is a circuit?

A

A circuit is a closed path or loop around which an electric current flows.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Describe simply what electricity is.

A

Electricity is a flow of electrons from one place to another.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What ‘pushes’ the electrons around a circuit?

A

A battery or power outlet creates the force that makes a current of electrons flow.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The force created by a battery is called __________.

A

Voltage (or potential difference)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What would happen if there is a break in the circuit?

A

Electricity would not flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is a conductor?

A

Conductors are materials that allow electricity to flow freely e.g. copper wire.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is an insulator?

A

Insulators are materials that do not allow electricity to pass through them freely e.g. rubber, plastic.

18
Q

Describe the pathway of electrons in a series circuit.

A

In a series circuit there is only one pathway around which the electrons can travel.

19
Q

Describe the pathway of electrons in a parallel circuit.

A

In a parallel circuit there are different pathways the electrons can travel.

20
Q

What is the unit for current?

A

Ampere (A)

21
Q

What is the unit for voltage/potential difference?

A

Volts (V)

22
Q

In a circuit what scientific name do we give for ‘battery’?

A

We call a battery a ‘cell’.

23
Q

What is meant by the term ‘resistance’?

A

This refers to how easy or difficult it is for electrons to pass through a component.

24
Q

Resistance is measured in ________.

A

Ohms

25
Q

Which piece of equipment measures current?

A

Ammeter

26
Q

In an atom which particles can move from one object to an other?

A

Electrons - because they are very small and light.

27
Q

A neutral object has equal numbers of positive and negative _________.

A

Charges

28
Q

In a series circuit, what happens if one of the bulbs blows?

A

All the other components will not work because the circuit is broken.

29
Q

If you want to measure current in a circuit, how do you wire the ammeter?

A

You have to wire it in series.

30
Q

If you want to measure voltage in a circuit, how do you wire the voltmeter?

A

You have to wire it in parallel.

31
Q

On your learning tools app draw the symbol for a bulb.

A

Check your exercise book for the bulb symbol to see if you are correct.

32
Q

On your learning tools app draw the symbol for an open switch.

A

Check your exercise book for the open switch symbol to see if you are correct.

33
Q

On your learning tools app draw the symbol for an voltmeter.

A

Check your exercise book for the voltmeter symbol to see if you are correct.

34
Q

What does an ammeter measure?

A

Current

35
Q

When a wire increases in length how does this affect the resistance?

A

The resistance also increases

36
Q

How does the thickness of a wire affect resistance?

A

The thinner the wire the higher the resistance

37
Q

What is potential difference?

A

It is the ‘push’ from the battery that pushes the electrons around the electrical circuit. It is also known as ‘voltage’.

38
Q

Define the term ‘current’

A

An electric current isa flow of electrons/charge around a circuit. The faster the charge flow, the higher the current.

39
Q

What unit is current measured in?

A

Current is measured in Amps (A)

40
Q

What is the symbol for resistance and what unit is it measured in?

A

The symbol for resistance is R
It is measured in Ohms (Ω)

Year 8 Ms Lee 2024 Flashcards (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions