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SP11

GCSE Separate Science Physics

QuestionAnswer
Which particle in an atom has a negative charge? Eletron
If an atom loses 2 electrons what will the charge of the atom be? 2+ / 2 positive.
What types of materials can gain a static charge? Insulators.
Why does your hair repel each other when they gain a static charge? Because they gain the same charge and like charges repel each other.
What does “induction” mean?(1) When an object becomes charged because it is brought close to an object that has a charge.
What are the possible charges of two objects if they attract each other when they are brought close together? Positive – negative Negative – positive.
What is the charge of an atom? No charge / neutral.
Why is it called “static” electricity? Because the charges cannot move.
What type of objects cannot become statically charged because the charges flow away too quickly? Conductors
What particle moves when objects become charged? Electrons
A polythene rod is rubbed with a cloth. If the cloth becomes positively charged, what is the charge of the rod? Negative.
What causes you to feel an electric shock? he flow of electrons through your body.
What is the name when excess charge is removed from an object? Discharged / Earthed.
What force causes there to be a build up of charge in clouds? Friction
What two ways can buildings be made safe from lightening? Be earthed (connected to the ground), or use a lightening conductor.
What is used on fuel pipes to aircrafts to connect it to the Earth? Bonding line.
What does “Earthing” mean? To be connected to the ground / provide a path for charge to flow to the ground.
What is a force field? A region of space around an object where another object can experience a force.
What is the name for the area around a charged object? Electric field.
Draw the field lines around the object. 1 mark for lines spreading outwards. 1 mark for arrows pointing outwards.
What is the name given to a single charge? Point charge
How do you know from a diagram where a field is the strongest? Where the field lines are closest together.
What does “uniform” mean? The same in all places.
How could you generate a uniform electric field? Between two parallel plates.
What direction would a negative charge move if it was placed to the left of a negative charge? To the left.
What word is used to describe a field that spreads outwards from a point? Radial.
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