The Wonders Of The Hydrosphere And Earth's Water Journey

The video introduces the hydrosphere, the layer of Earth containing all water. It explains the three states of water: liquid, solid, and gas, and how water originated from comets and asteroids. The video highlights the distribution of fresh and salt water, emphasizing that only 3% is drinkable. It discusses the water cycle and stresses the importance of conserving water due to pollution. The video concludes by urging viewers to appreciate and protect water for the survival of all living beings.

What percentage of Earth's surface is covered by water?

• 60%

• 70%

• 50%

• 75%

What is the primary reason Earth is called the 'blue planet'?

• Because of its atmosphere

• Due to the vast amount of water

• Because of its vegetation

• Due to its distance from the sun

Which of the following is NOT a state in which water can be found?

• Liquid

• Plasma

• Solid

• Gaseous

What is the main component of living beings?

• Carbon

• Water

• Oxygen

• Nitrogen

How did water first arrive on Earth?

• Through volcanic eruptions

• From comets and asteroids

• Through the atmosphere

• By photosynthesis

What percentage of the hydrosphere is made up of saltwater?

• 99%

• 50%

• 70%

• 97%

What is the term for the continuous movement of water on Earth?

• Evaporation cycle

• Water cycle

• Hydrosphere loop

• Rain cycle

What is the percentage of fresh water available for drinking?

• 10%

• 3%

• 1%

• 5%

Why is it important to conserve water?

• Because it is expensive

• To prevent pollution

• To ensure the survival of living beings

• To maintain Earth's temperature

What happens to water when it is polluted?

• It evaporates faster

• It becomes more abundant

• It turns into saltwater

• It becomes unsafe for living beings