glossary

Question 1

carbon-neutural

Answer 1

when a process does not result in net contribution of carbon dioxide to the atmosphere, for example the burning of biofules

Question 2

chemical energy store

Answer 2

energy stored in chemical bonds

Question 3

conduction

Answer 3

the transfer of heat or electricity through a material

Question 4

conductor

Answer 4

a material that allows electrons to move freely inside it. this means that electrical charge and thermal energy can pass through it easily

Question 5

conservation of energy

Answer 5

energy cannot be created or destroyed

Question 6

energy transfer

Answer 6

the movement of energy from one transfer to another

Question 7

geothermal energy

Answer 7

energy harnessed from hot rocks beneath the earths surface

Question 8

hydroelectricity

Answer 8

electrically generated by harnessing energy from falling water

Question 9

insulator

Answer 9

a material that does not allow energy to transfer through it easily

Question 10

mass

Answer 10

the amount of matter in an object measured in kilograms

Question 11

non-renewable resourse

Answer 11

an energy source which cannot be replenished in a lifetime and will eventually run out

Question 12

nuclear energy store

Answer 12

the energy stored in the nucleus of an atom

Question 13

power

Answer 13

the rate at which energy is transferred or the rate at witch work is done measured in watts

Question 14

radiation

Answer 14

the transfer of energy as electromagnetic waves or as moving subatomic perticles

Question 15

renewable resource

Answer 15

can be replenished and will not run out

Question 16

solar power

Answer 16

energy transferred from the sun

Question 17

spring constant

Answer 17

a measure of the stiffness of a spring, measured in newtons per metre

Question 18

thermal conduction

Answer 18

the transfer of thermal energy through a solid

Question 19

tidal power

Answer 19

energy harnessed by tidal flow

Question 20

work done

Answer 20

the transfer of energy from one energy store to another

Question 21

ammeter

Answer 21

a component used to measure electric current in a circuit

Question 22

charge

Answer 22

a property of a particle that causes it to experience a force in an electric field

Question 23

current

Answer 23

the flow of electrical charge measured in amps presented in an equation with the letter I

Question 24

resistance

Answer 24

the degree in witch a component opposes the flow of electrical charge measured in ohms represented in an equation by the letter R

Question 25

potential difference

Answer 25

a measure of the work done or the energy transferred to a component by each coulomb of charge that passes through it, measured in volts represented in an equation by the letter v

Question 26

ohm’s law

Answer 26

the current through a resistor at a constant temperature is directly proportional to the potential difference across the resistor

Question 27

kinetic energy store

Answer 27

the energy store of a moving object