Water Quiz

What is water made of? 

• Sugar and salt

• Oxygen and hydrogen

• Sand and air

Answer explanation

Water is composed of two hydrogen atoms and one oxygen atom, forming the chemical compound H2O. Therefore, the correct answer is oxygen and hydrogen.

Why is water important for humans?

• To fly

• To grow and stay healthy

• To sleep

Answer explanation

Humans need water to grow and stay healthy as it is essential for various bodily functions, including hydration, nutrient transport, and temperature regulation. Without adequate water, health can deteriorate.

How many litres of water should we drink a day (on average)?

• 1-2 litres

• 10 litres

• None

Answer explanation

The average recommended water intake is 1-2 litres per day for most people. This amount helps maintain hydration and supports bodily functions, making it the correct choice.

Where does tap water come from? 

• The sea

• Rivers and lakes

• Clouds

Answer explanation

Tap water usually comes from rivers and lakes, which are natural sources of freshwater. The sea is saline and not suitable for drinking, while clouds are part of the water cycle but do not directly provide tap water.

For what do we use water at home?

• Charging phones

• Cooking and cleaning

• Watching TV

Answer explanation

We use water primarily for cooking and cleaning at home. It is essential for preparing food and maintaining hygiene, unlike charging phones or watching TV, which do not require water.

What happens if we don’t drink enough water? 

• You become sleepy.

• You get sick or tired.

• You grows faster.

Answer explanation

Not drinking enough water can lead to dehydration, which often results in feeling sick or tired. Staying hydrated is essential for maintaining energy levels and overall health.

Is all water on Earth safe to drink?

• Yes

• No

• Only when cold

Answer explanation

No, not all water on Earth is safe to drink. Many sources, such as rivers, lakes, and groundwater, can contain harmful contaminants, making them unsafe for consumption without proper treatment.

What does "clean water" mean?

• It looks blue

• It smells nice

• It is safe to drink

Answer explanation

'Clean water' means it is safe to drink, free from harmful contaminants. While appearance and smell can indicate quality, the key factor is its safety for consumption.

What is part of the water cycle?

• Trees dancing

• Rain and clouds

• Fire and smoke

Answer explanation

The water cycle includes processes like evaporation, condensation, and precipitation. Rain and clouds are essential components, as rain is a form of precipitation that falls from clouds, making this the correct choice.

What is the difference between saltwater and freshwater?

• Saltwater is for animals only

• Saltwater is salty and undrinkable

• There is no difference

Answer explanation

Saltwater contains a high concentration of salt, making it undrinkable for humans. In contrast, freshwater is low in salt and is suitable for drinking. Thus, the correct choice highlights that saltwater is salty and undrinkable.