50 Water Quiz Questions and Answers

Disclosure: This post may contain affiliate links, meaning I get a commission if you decide to make a purchase through my links, at no extra cost for you

Do you love quizzes about science and the Earth? Then this ultimate water quiz is for you!

Water is the most important thing any living being needs and there is so much to know about it.

In this water trivia, you will find 5 rounds of questions and answers about water. This includes questions about science but also common knowledge.

Round 1: Easy Water Trivia Questions

1. What is the molecular name for water?
2. What is the freezing point of water?
3. What is the boiling point of water?
4. What is the term for frozen water?
5. What is the largest ocean on Earth?
6. What do we call a waterless area of land with little to no vegetation?
7. What do we call water that is held underground, in the soil or in crevices in rocks?
8. What is the longest river in the world?
9. What is the deepest point in the world’s oceans?
10. What does the sea reflect to get its sparkling blue colour?

Round 1: Easy Water Trivia Questions and Answers

1. What is the molecular name for water? h2O
2. What is the freezing point of water? 0 °C/32°F
3. What is the boiling point of water? 100 °C/212°F
4. What is the term for frozen water? Ice
5. What is the largest ocean on Earth? Pacific Ocean
6. What do we call a waterless area of land with little to no vegetation? A Desert
7. What do we call water that is held underground, in the soil or in crevices in rocks? Groundwater
8. What is the longest river in the world? The Nile
9. What is the deepest point in the world’s oceans? The Mariana Trench
10. What does the sea reflect to get its sparkling blue colour? The sky

Round 2: Water Multiple-Choice Questions

1. What percentage of the human body is made of water?
   1. 50%
   2. 60%
   3. 70%
   4. 80%
2. Saline is a mixture of water and…
   1. Sodium chloride
   2. Hydrogen sulphate
   3. Sodium bicarbonate 
   4. Carbon dioxide 
3. 68.7% of the world’s freshwater is found in….
   1. Clouds
   2. Rivers
   3. Glaciers
   4. Sea Ice 
4. Which of the following foods has the highest water content?
   1. Celery
   2. Watermelon
   3. Apricot
   4. Grape
5. Roughly what percentage of the Earth’s water is frozen?
   1. 2%
   2. 5%
   3. 7%
   4. 10%
6. Almost half of all water used in the United States each year is used in…
   1. Agriculture
   2. Manufacturing
   3. Power generation
   4. The sewage system
7. Not including Antarctica, which country has the most glaciers?
   1. Denmark
   2. Norway
   3. Canada
   4. Russia
8. How many months did the longest ever drought last?
   1. 103
   2. 123
   3. 153
   4. 173
9. What is the driest place on Earth?
   1. The Gobi Desert
   2. The Namib Desert
   3. The Atacama Desert
   4. Death Valley
10. According to a UN estimate, what percentage of the world’s population do not have access to clean drinking water?
    1. 11%
    2. 16%
    3. 21%
    4. 26%

Round 2: Water Multiple-Choice Questions and Answers

1. What percentage of the human body is made of water? b . 60%
2. Saline is a mixture of water and… a. Sodium Chloride
3. 68.7% of the world’s freshwater is found in…. C. Glaciers 
4. Which of the following foods has the highest water content? A. Celery
5. Roughly what percentage of the Earth’s water is frozen? A. 2%
6. Almost half of all water used in the United States each year is used in… c. Power generation
7. Not including Antarctica, which country has the most glaciers? A. Denmark
8. How many months did the longest ever drought last? D. 173
9. What is the driest place on Earth? C. The Atacama Desert
10. According to a UN estimate, what percentage of the world’s population do not have access to clean drinking water? D. 26%

Round 3: Water Quiz – True or False

1. Earth is the only known planet with liquid water.
2. Sea ice covers roughly 7% of the Earth’s surface.
3. Elderly people have less water in their bodies than younger people.
4. The Dead Sea is the saltiest body of water on Earth.
5. The amount of water on Earth has not changed in the last million years.
6. Blue eyes have a higher water content than brown eyes.
7. About 3.5% of the weight of the oceans is salt.
8. An Olympic swimming pool contains around 250 thousand litres of water.
9. In 2022, scientists discovered a reservoir of water three times the volume of all the Earth’s oceans more than 600 metres below the Earth’s surface.
10. The WHO estimates that up to 700 million people could be at risk of being displaced by drought by 2030.

Round 3: Water Quiz Answers – True or False

1. Earth is the only known planet with liquid water. False
2. Sea ice covers roughly 7% of the Earth’s surface. True
3. Elderly people have less water in their bodies than younger people. True
4. The Dead Sea is the saltiest body of water on Earth. False, that would be the Don Juan Pond in Antarctica
5. The amount of water on Earth has not changed in the last million years. True
6. Blue eyes have a higher water content than brown eyes. False
7. About 3.5% of the weight of the oceans is salt. True
8. An Olympic swimming pool contains around 250 thousand litres of water. False, an olympic pool contains around 2.5 million litres of water.
9. In 2022, scientists discovered a reservoir of water three times the volume of all the Earth’s oceans more than 600 metres below the Earth’s surface. True 
10. The WHO estimates that up to 700 million people could be at risk of being displaced by drought by 2030. True

Round 4: Medium Water Trivia Questions

1. What is the term for a scientist who studies water and water cycles on Earth?
2. What gas is added to carbonated water to make it fizzy?
3. Which country is known for its onsen hot springs?
4. What do kangaroo rats, thorny devils and sand gazelles have in common?
5. What is the name for the 6 year drought which brought American agriculture to its knees in the 1930s?
6. What do we normally call the salt water solution used for pickling vegetables?
7. What is the largest lake in the world, containing 20% of the world’s surface fresh water?
8. Which country would you travel to if you wanted to visit the world’s tallest geyser?
9. What kind of energy can be created by harnessing the power of underground water and steam?
10. An overflow of which river caused the 1931 China floods?

Round 4: Medium Water Trivia Questions and Answers

1. What is the term for a scientist who studies water and water cycles on Earth? Hydrologist 
2. What gas is added to carbonated water to make it fizzy? Carbon dioxide 
3. Which country is known for its onsen hot springs? Japan
4. What do kangaroo rats, thorny devils and sand gazelles have in common? They don’t drink water
5. What is the name for the 6 year drought which brought American agriculture to its knees in the 1930s? The Dust Bowl
6. What do we normally call the salt water solution used for pickling vegetables? Brine
7. What is the largest lake in the world, containing 20% of the world’s surface fresh water? Lake Baikal 
8. Which country would you travel to if you wanted to visit the world’s tallest geyser? New Zealand
9. What kind of energy can be created by harnessing the power of underground water and steam? Hydrothermal energy
10. An overflow of which river caused the 1931 China floods? The Yangtze

Round 5: Hard Water Trivia Questions

1. Why is water sometimes called the ‘universal solvent’?
2. Which country has the lowest average elevation in the world at just 1.8 metres?
3. Uunartoq, Pamukkale, Khir Ganga and Deception Island are all examples of what?
4. Which internal organ has the highest water content?
5. Balneology is the study of the medicinal benefits of what activity?
6. What part of a plant transports water from the roots to the leaves?
7. What is the world’s only coastal sand desert?
8. What kind of tide occurs when the sun and moon are at a right angle from one another?
9. What is the largest glacier in the world?
10. In 1958, Alaska’s Lituya Bay was the site of the largest ever what on record?

Round 5: Hard Water Trivia Questions and Answers

1. Why is water sometimes called the ‘universal solvent’? Because more substances dissolve in water than any other chemical
2. Which country has the lowest average elevation in the world at just 1.8 metres? The Maldives
3. Uunartoq, Pamukkale, Khir Ganga and Deception Island are all examples of what? Hot springs
4. Which internal organ has the highest water content? The brain
5. Balneology is the study of the medicinal benefits of what activity? Bathing
6. What part of a plant transports water from the roots to the leaves? Xylem
7. What is the world’s only coastal sand desert? The Namib Desert
8. What kind of tide occurs when the sun and moon are at a right angle from one another? A Neap Tide
9. What is the largest glacier in the world? Seller Glacier
10. In 1958, Alaska’s Lituya Bay was the site of the largest ever what on record? Wave

You may also be interested in:

• World Oceans Day Quiz: 20 Questions and Answers about World Oceans Day
• Easy Science Quiz: 60 Easy Science Questions and Answers