Midweek quiz: Water
We drink, wash and cook with it. But how much do you know about water, one of the world's most precious resources?
Test yourself, as part of BBC News Online's Waterless World series.
1.) Water quiz
Which is the driest place in the world?
- Sahara desert
- Gobi desert
- Atacama desert
2.) Water quiz
Water supplied by which company was voted the best tasting tap water in the UK in July 2007?
- Scottish Water
- Severn Trent Water
- Yorkshire Water
3.) Water quiz
Obviously not in a kettle like this, but at what temperature does water boil on the top of Mount Everest?
4.) Water quiz
Water is colourless. True or false?
5.) Water quiz
What percentage of the world's water supply is fresh?
6.) Water quiz
The formula for water is H2O - but which of these is a correct formula for heavy water, used in nuclear experiments and some reactors?
7.) Water quiz
Even before it gets to our taps, how much of the water supply in the UK is lost through leaky pipes?
8.) Water quiz
In the floods that followed the recent snow storms, how much rain fell in Shoreham, West Sussex, in one day?
- 1.2in (3.1cm)
- 1.4in (3.6cm)
- 1.6in (4.1cm)
9.) Water quiz
Where is the deepest body of freshwater in the UK?
- Northern Ireland
10.) Water quiz
How much more rain do the wettest areas of the UK get than the driest areas?
- Five times
- 10 times
- 15 times
- It's the Atacama desert in Chile, according to the National Geographic. Although some do argue that it is Antartica.
- It's Severn Trent Water, with eight million customers across Wales, the Midlands and Yorkshire. Chef Tom Aikens, who was on the judging panel, described it as having a "clear taste" and being "very fresh".
- It is 68C. Water's boiling temperature is related to the barometric pressure, so at sea level it is 100C but at the top of Everest - 8,848m up - it's 68C.
- False - it's blue. Although in small amounts water looks clear, it is in fact a light blue colour.
- It's 2.5%, according to the Univeristy of Michigan. The rest is mostly undrinkable saltwater in oceans and seas.
- It is D2O - heavy water is so-called because it has a higher proportion than normal of the isotope deuterium.
- It's 15%, according to Ofwat, the water industry regulator.
- It's 1.6in. The average monthly rainfall in Sussex is 2.2in (5.7cm).
- It's Scotland. Loch Morar in the Highlands has a maximum depth of 310m.
- It's 10 times, according to the Met Office. In parts of the western Highlands, the average annual rainfall is about 200in (500cm) and in the driest parts - East Anglia and the Thames Estuary - it's about 20in (50cm).
0 - 3 : In need of rehydration
4 - 7 : Half a glass - or is that half empty?
8 - 10 : Fountain of knowledge
For a complete archive of past quizzes, including the Curriculum tests and our weekly news quiz 7 days 7 questions, visit the
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