Water Quiz - Erasmus+ project (S)TEAM

What’s the chemical formula of water?

• H2O

• H2O2

• HO

Why does ice float on water?

• Ice doesn’t float on water

• It has a higher density.

• It has a lower density

Why can water have no net charge but have slight charges in different parts of the molecule?

• The oxygen end is slightly negative and the hydrogen end is slightly positive.

• The hydrogen and oxygen ends change in polarity.

• The hydrogen end is slightly negative and the oxygen end is slightly positive.

• Because it is hydrophobic

What bonds are established between water molecules?

• London Forces “bonds”

• Hydrogen bonds

• Dipole-dipole bonds

How much water does it take to produce a kilo of meat?

• 13000 L

• 10000 L

• 11500 L

A dripping tap uses about _____ liters of water per day.

• 5

• 15

• 19

• 25

How much water should a teenager drink daily?

• Less than 0.5 liters

• 0.8 - 1 liter

• More than 2 liters

• 1.5 -2 liters

What percentage of a preschooler's body (aged 5) is made up of water?

• 25%

• 45%

• 65%

• 85%

Why is it important for someone to drink enough water every day?

• Because water contributes to adequate hydration of the body.

• Because water is essential for the normal functioning of the organs of the human body.

• Because drinking water instead of sugary drinks / beverages, such as soft drinks and packaged juices, can help prevent overweight.

• All the above

At the global level, which economic activity consumes the most water?

• livestock

• agriculture

• fishing

• industry