As a unit of volume, 1 US cup (half a US pint) is officially 0.24 l; but

a cup of tea or coffee is usually about 0.18 l. To raise 50 cups of water, at

0.18 l per cup, from 15 °C to 100 °C requires 1 kWh.

So “nine million cups of tea per year” is another way of saying “20 kW.”

“If everyone in the UK that could, installed cavity wall insulation, we could

cut carbon dioxide emissions by a huge 7 million tons. That’s enough

carbon dioxide to fill nearly 40 million double-decker buses or fill the new

Wembley stadium 900 times!”

From which we learn the helpful fact that one Wembley is 44 000 double

decker buses. Actually, Wembley’s bowl has a volume of 1 140 000 m^{3}.

“If every household installed just one energy saving light bulb, there

would be enough carbon dioxide saved to fill the Royal Albert Hall 1,980

times!” (An Albert Hall is 100 000 m^{3}.)

Expressing amounts of CO_{2} by volume rather than mass is a great way

to make them sound big. Should “1 kg of CO_{2} per day” sound too small,

just say “200 000 litres of CO_{2} per year”!

A container is 2.4 m wide by 2.6 m high by (6.1 or 12.2) metres long (for

the TEU and FEU respectively).

One TEU is the size of a small 20-foot container – an interior volume

of about 33 m^{3}. Most containers you see today are 40-foot containers with

a size of 2 TEU. A 40-foot container weighs 4 tons and can carry 26 tons of

stuff; its volume is 67.5 m^{3}.

A swimming pool has a volume of about 3000 m^{3}.

One double decker bus has a volume of 100 m^{3}.

One hot air balloon is 2500 m^{3}.

The great pyramid at Giza has a volume of 2 500 000 cubic metres.

The area of the earth’s surface is 500 × 10^{6} km^{2}; the land area is 150 ×

10^{6} km^{2}.

My typical British 3-bedroom house has a floor area of 88 m^{2}. In the

USA, the average size of a single-family house is 2330 square feet (216 m^{2}).

If we add the suffix “e” to a power, this means that we’re explicitly talking

about electrical power. So, for example, a power station’s output might be

1 GW(e), while it uses chemical power at a rate of 2.5 GW. Similarly the

mass of CO_{2} |
↔ | volume |
---|---|---|

2 kg CO_{2} |
↔ | 1 m^{3} |

1 kg CO_{2} |
↔ | 500 litres |

44 g CO_{2} |
↔ | 2 litres |

2 g CO_{2} |
↔ | 1 litre |

hectare | = | 10^{4} m^{2} |

acre | = | 4050 m^{2} |

square mile | = | 2.6 km^{2} |

square foot | = | 0.093 m^{2} |

square yard | = | 0.84 m^{2} |