Unit 7

Question 1

rain that is polluted with gases

Answer 1

acid rain

Question 2

a long period of time (for example the Stone Age)

Answer 2

age

Question 3

a system that cools the air in a building

Answer 3

air conditioning

Question 4

energy from natural sources, such as solar power or wind power

Answer 4

alternative energy

Question 5

science used in practical ways

Answer 5

applied science

Question 6

the smallest amount of an element

Answer 6

atom

Question 7

a unit of measurement for oil

Answer 7

barrel

Question 8

if something is used up, there is none left

Answer 8

be used up

Question 9

a fuel made from a plant source

Answer 9

bio-fuel

Question 10

an animal that lives in the desert and has a hump

Answer 10

camel

Question 11

an element (C)

Answer 11

carbon

Question 12

a hard black substance that comes from the ground and that is burnt for fuel

Answer 12

coal

Question 13

oil before it has been refined or purified

Answer 13

crude oil

Question 14

oil that lorries run on

Answer 14

diesel oil

Question 15

a very poisonous substance

Answer 15

dioxin

Question 16

very greatly

Answer 16

dramatically

Question 17

a house that uses technology which respects the enviroment

Answer 17

eco-house

Question 18

a basic natural substance such as carbon or oxygen which has one type of atom only

Answer 18

element

Question 19

design and construction of machines, bridges etc.

Answer 19

engineering

Question 20

alcohol

Answer 20

ethanol

Question 21

because there wasn’t enough …

Answer 21

for lack of …

Question 22

a fuel such as gas or coal which comes from decayed plants

Answer 22

fossil fuel

Question 23

a part or proportion of something

Answer 23

fraction

Question 24

petrol

Answer 24

gasoline

Question 25

gases that cause global warming

Answer 25

greenhouse gases

Question 26

a compound that has carbon and hydrogen atoms

Answer 26

hydrocarbons

Question 27

a gas (H)

Answer 27

hydrogen

Question 28

infinite

Answer 28

limitless

Question 29

the commander of all the Allied armies (Britain,France etc.) during the first World War

Answer 29

Marshal Foch

Question 30

very, very small

Answer 30

microscopic

Question 31

an abbreviation showing the structure of a chemical substance

Answer 31

molecular formula

Question 32

gas for fuel that comes from underground or under the sea

Answer 32

natural gas

Question 33

the thick black substance from which petrol is made

Answer 33

oil

Question 34

a period in which there is not enough oil

Answer 34

oil crises

Question 35

an industrial site where oil is purified to make gas and petrol

Answer 35

oil refinery

Question 36

a structure in the sea where there is an oil well

Answer 36

oil rig

Question 37

a deep hole made in the ground to get oil

Answer 37

oil well

Question 38

to reach its greatest amount

Answer 38

peak

Question 39

a long tube that carries a liquid or gas

Answer 39

pipe

Question 40

(here) Earth

Answer 40

planet

Question 41

a kind of chemical compound which has large atoms which are themselves made of smaller atoms of the same type

Answer 41

polymer

Question 42

polyvinyl chloride; a type of plastic

Answer 42

PVC

Question 43

energy that will not run out, such as wind power

Answer 43

renewable energy

Question 44

to use

Answer 44

run on

Question 45

if you run out of something, you have none of it left

Answer 45

run out of

Question 46

a square device placed on a roof to catch the energy from the sun

Answer 46

solar panel

Question 47

energy from the sun

Answer 47

solar power

Question 48

where something comes from

Answer 48

source

Question 49

an early period of human history when people used stone tools

Answer 49

Stone Age

Question 50

a cooker

Answer 50

stove

Question 51

the amount of something that is available for use

Answer 51

supplies

Question 52

a large container

Answer 52

tank

Question 53

very soon

Answer 53

urgently

Question 54

tiny drops of liquid forming a mist

Answer 54

vapour