# P2 : Electricity and the Atom - Flash Cards [H]

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What causes the build up of Static Electricty?
Friction.
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When certain insulating materials are rubbed together, what part of the atom moves?
Electron (s).
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What happens when a positive charge and a negative charge meet?
They attract.
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What has to happen for charges to repel?
They have to both be either negative or positive.
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Which one can charges can move easier through: Conductors or Insulators?
Conductors.
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What is Current?
Current is the flow of electric charge around a circuit.
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What is Potential Difference?
Potential Difference is the driven force that pushes the current round.
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What is Resistance?
Resistance is anything in the circuit which slows the flow down.
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What does a Fuse look like (Graphical Term)?
A rectangle, with the wire passing through it.
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What does a LED look like (Graphical Term)?
A Next symbol in a circle: (>|)
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What also increases alongside Resistance?
The temperature.
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How does Current flow?
Current only flows in one direction through a Diode.
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Why are LED's being used a lot more in today's lights?
The use a much smaller current, compared to other forms of lighting.
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What does 'LDR' stand for?
Light-Dependant Resistor.
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In a Series Circuit, what remains the same - no matter where it is in the circuit?
The current.
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In a Series Circuit, how do you work out the total Resistance?
Total up all of the resistances.
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In a Parallel Circuit, what remains the same - no matter where it is in the circuit?
The Potential Difference.
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In a Parallel Circuit, what is shared between the branches?
The current.
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What is the type of Current in a Mains supply?
Alternating Circuit (AC).
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What is the type of Current in a Battery supply?
Direct Current (DC).
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What is the voltage of the UK mains supply?
Approximately 230 Volts.
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What is the Frequency of the UK mains supply?
50 Hertz (Hz) or 50 cycles per second.
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What does 'CRO' stand for and what is it?
A Cathode Ray Oscilloscope and it's basically a smarter voltmeter.
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Give examples of types of hazards in the home:
1) Long Cables, 2) Frayed Cables, 3) Cables in contact with hot or wet, 4) Water near sockets, 5) Shoving things into sockets, 6) Damaged plugs, 7) Too many plugs into one socket, 9) Appliances without their covers on.
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What are the Three separate wires in most Cables and their colour?
Live Wire (Brown), Neutral Wire (Blue) and Earth Wire (Green and Yellow).
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What component is used for Motion?
A Motor.
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What component is used for Light?
Light Bulbs.
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What component is used for Heat?
Kettles/Hair Dryers.
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What component is used for Sound?
A Speaker.
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What makes up the Atomic Mass?
The amount of Protons plus the Amount of Neutrons.
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What is the Atomic number?
The amount of Protons in that Element/Isotope.
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What is the charge of a Proton?
+1
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What is the charge of a Electron?
-1
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In Atoms, what to parts of the atom have the same amount?
Number of Protons EQUALS Number of Electrons.
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What is the charge of a stable Atom?
Neutral/No Charge.
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What is an Atom called when it becomes charge due to some electrons are added or removed?
An ion.
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What is an Isotope?
Isotopes are different forms of the same Element, but the atoms have the same number of protons but a different number of neutrons.
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What are the Three types of Radioactivity?
Alpha, Beta and Gamma.
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What are Alpha particles?
Helium Nuclei.
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What are Beta particles?
Electrons.
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What are Gamma rays?
Very short wavelength Electro-Magnetic waves.
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What is the charge on Alpha particles?
Positive Charge.
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What is the charge on Beta particles?
Negative Charge.
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Define, Half life:
Half-Life is the average time it takes for the number of Nuclei in a Radioactive Isotope Sample to Halve.
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Give one use of Alpha Radiation?
Smoke Detectors.
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Give one use of Beta Radiation?
Tracers for Medicine.
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Give one use of Gamma Radiation?
Radiotherapy for the treatment of cancer.
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What is Nuclear Fission?
It is the splitting up of big Atomic Nuclei.
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What is Nuclear Fusion?
The joining of Small Atomic Nuclei.
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From what, does stars initially form from?
Clouds of Dust and Gas.
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What is the life cycle for a star, about the same size as the sun?
Protostar > Main Sequence Star > Red Giant > White Dwarf .
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What is the life cycle for a star, much bigger than the sun?
Protostar > Main Sequence Star > Red Super Giant > Supernova > Neutron Star or Black Hole.
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What did the early Universe contain?
Only Hydrogen.
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## Other cards in this set

### Card 2

#### Front

When certain insulating materials are rubbed together, what part of the atom moves?

Electron (s).

### Card 3

#### Front

What happens when a positive charge and a negative charge meet?

### Card 4

#### Front

What has to happen for charges to repel?

### Card 5

#### Front

Which one can charges can move easier through: Conductors or Insulators?

#### Back

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If you need some additional help on the topic electricity, use these revision cards to help.

Good for AQA GCSE Additional Science especially, as well as other exam boards for certain parts.

They are printable so you can add them to your own revision cards.

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thanks :)

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thnx to who ever created this mind map it has helped me revise its amazing

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useful

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