Across
- 1. it takes about 315 litres (or 70 gallons) to fill a ______
- 2. Water boils at a ______ temperature at Mount Everest base camp than on Brighton Beach.
- 6. A person can live about a ______ without water
- 8. Water expands by ____ percent when it freezes
- 9. Sound travels _______ underwater than in air
- 11. The _______ effect is the name given to the observation that hot water can freeze faster than cold water in otherwise similar conditions.
- 12. 30% of fresh water is in the ______.
- 14. 68.7% of the fresh water on Earth is trapped in _____.
- 16. There is the same amount of _______ on Earth as there was when the Earth was formed.
- 17. The freezing point of water ______ as the amount of salt dissolved in it increases.
Down
- 1. 73% of the human _______ is water
- 3. Water is composed of two elements, Hydrogen and _____
- 4. A healthy adult should drink _____ litres of water everyday to remain healthy.
- 5. Water travels up a plant via the _______
- 7. A ________ can last longer between drinks than a camel
- 10. Water is one of the foundations of the ______ system
- 13. Water can ______ more substances than any other liquid
- 15. 71% of the surface of ______ is covered in water