Electricity I

Question 1

electrostatic phenomena

Answer 1

Things that happen because objects have become charged

Question 2

charge

Answer 2

This can be positive or negative. It is a property of protons or electrons.

Question 3

positive (+) charge

Answer 3

Describes the charge on a proton or on an object that has had electrons transferred away from it.

Question 4

negative (-) charge

Answer 4

Describes the charge on an electron or on an object that has had electrons transferred to it

Question 5

electrostatic attraction

Answer 5

Force between two particles of objects that have opposite charge

Question 6

proton

Answer 6

A tiny sub-atomic particle with a positive charge that is found in the nucleus of an atom. The relative mass of a proton is 1

Question 7

neutron

Answer 7

A tiny sub-atomic particle with no charge that is found in the nucleus of an atom. The relative mass of a neutron is 1

Question 8

electron

Answer 8

A tiny sub-atomic particle with a negative charge that flows through a wire to create an electric current

Question 9

nucleus

Answer 9

The central part of an atom

Question 10

neutral

Answer 10

Describes an object with no charge; its positive and negative charges cancel out

Question 11

neutralise

Answer 11

To cancel out, when you add an equal amount of positive charge to negative charge

Question 12

electric field

Answer 12

A region around a charged object where other charged objects feel a force

Question 13

static

Answer 13

Charge on an insulator that does not move

Question 14

insulator

Answer 14

A material that does not conduct energy or electricity very well.

Question 15

conductor

Answer 15

A material such as metal or graphite that conducts charge or energy well.

Question 16

electric circuits

Answer 16

A complete pathway for an electric current to flow.

Question 17

component

Answer 17

An item used in an electric circuit, such as a lamp.

Question 18

cell

Answer 18

A device that uses a chemical reaction to produce a voltage/potential difference.

Question 19

battery

Answer 19

Two or more electrical cells joined together.

Question 20

terminal

Answer 20

The positive or negative end of a cell or battery.

Question 21

current

Answer 21

The flow of electric charge/electrons around a complete circuit.

Question 22

ions

Answer 22

Atoms that have gained or lost electrons

Question 23

amperes

Answer 23

Unit of measurement of an electric current, symbol A

Question 24

milliamps

Answer 24

1/1000 of an amp.

Question 25

ammeter

Answer 25

A device for measuring electric current in a circuit.

Question 26

series circuit

Answer 26

An electrical circuit in which the components are joined in a single loop.

Question 27

resistance

Answer 27

How difficult it is for current to flow through a component in a circuit.

Question 28

model

Answer 28

A way of representing something that you cannot see or experience directly.

Question 29

spark

Answer 29

A flash of light that you see when the air conducts electricity

Question 30

risk

Answer 30

he chance of injury from a hazard. A combination of the probability that something will happen and the consequence if it did.

Question 30

lightning conductor

Answer 30

A piece of metal connected to tall buildings to conduct lighting to the ground.

Question 31

earthing

Answer 31

Process of connecting objects to the ground