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- 1. Multiple Choice
How many percent of water does the human body consist of?
around 60%
around 20%
around 80%
around 5%
- 2. Multiple Choice
What is the daily need of water for a human body?
2-3l
6l
1-2l
0,5l
- 3. Multiple Choice
What is the sum formula of water?
H2O
H3PO4
HNO3
HO2
- 4. Multiple Choice
What is the density of water at 4 degrees Celsius?
1 g/cm3
50 g/cm3
0.1 g/cm3
100 g/cm3
- 5. Multiple Choice
How much of the Earth's surface is water?
40%
70%
10%
95%
- 6. Multiple Choice
What's another name for water?
dihydrogen monoxide
aqua oxygen
aquarium dihydrogen
monohydrate oxygen
- 7. Multiple Choice
How much water is in your blood?
80%
20%
10%
50%
- 8. Multiple Choice
How deep is the deepest trench on Earth?
-10 994m
-5 562m
-8 023m
-20 052m
- 9. Multiple Choice
How fast does sound travel in water?
1.480 m/s
2.238 m/s
50 m/s
1 m/s
- 10. Multiple Choice
What's the longest river in Europe?
the Volga River
the Danube River
the Ural River
the Dnieper River
- 11. Multiple Choice
At what temperature does water boil?
100°C
85°C
40°C
120°C
- 12. Multiple Choice
Which animals need water in their life cycle?
amphibians
mammals
birds
reptiles
- 13. Multiple Choice
How many percent of jellyfish is water?
95%
10%
65%
80%
- 14. Multiple Choice
What happens if we put an egg in water?
It will float to the surface.
It will break.
It will explode.
It will stay at the bottom.
- 15. Multiple Choice
What's the biggest lake on Earth?
Caspian Sea
Baikal
Swan Lake
Victoria Lake
- 16. Multiple Choice
How many milliliters are in a liter?
1000
10
100
1
- 17. Multiple Choice
O2 + ... = 2 H2O
2 H2
H2
2 H
H4
- 18. Multiple Choice
How many percent of the world's water is salt water?
around 97%
around 15%
around 81%
around 0,1 %
- 19. Multiple Choice
When water freezes...
it expands by 9%.
it reduces by 5%.
it explodes.
it expands by 20%.
- 20. Multiple Choice
What are the types of water?
fresh water and salt water
salt water and sweet water
salt water
ice and water
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