Kenapa Air di Bumi Tidak Pernah Habis? - Proses Siklus Air | #IndonesiaTetapBelajar

Summary

This video explains the essential role of water on Earth, highlighting that 97.5% of Earth's water is salty, and only 2.5% is fresh, with most of it being inaccessible. It details how water is crucial for life, covering its various forms—liquid, solid, and gas—and the water cycle. The process involves evaporation, precipitation, and transpiration, which ensure water continuously circulates between the earth and atmosphere. The video also emphasizes the importance of water for daily human activities and concludes with a reference to further learning resources available on the Zenius platform.

Takeaways

• 😀 97.5% of the water on Earth is salty, not freshwater.
• 😀 Only 2.5% of Earth's water is freshwater, and most of it is inaccessible, such as being trapped in ice or deep underground.
• 😀 Less than 1% of Earth's freshwater is usable by humans.
• 😀 The average daily water usage per person in urban areas of Indonesia is 144 liters.
• 😀 Nearly half of the water used is for bathing, with the remainder for washing, cooking, and drinking.
• 😀 Despite the limited amount of freshwater, it is not running out continuously due to the water cycle.
• 😀 Water is essential for life, with the human body consisting of 70% water.
• 😀 Water changes forms, becoming ice when cooled and vapor when heated.
• 😀 In nature, water exists in three forms: liquid (underground and flowing in rivers), solid (snow and ice), and vapor (in the atmosphere).
• 😀 The water cycle involves evaporation, precipitation, and transpirational processes, allowing water to return to its source.

Q & A

What percentage of Earth's water is saltwater?

97.5% of Earth's water is saltwater, which is not suitable for human consumption or daily use.

How much freshwater is available for human use?

Only 2.5% of Earth's water is freshwater, and less than 1% of that is accessible for human use.

Why can't most of the freshwater be used by humans?

Most of the freshwater is either trapped in ice caps, deep underground, or in other inaccessible locations.

What is the average water consumption per person in urban Indonesia?

The average water usage per person in urban areas in Indonesia is 144 liters per day.

How is water primarily used by humans in daily life?

Water is primarily used for bathing, washing, cooking, and drinking, with almost half being used for bathing.

Why is water essential for life?

Water is crucial for life because most living organisms, including humans, are composed of a significant percentage of water.

What happens to water when it is heated or cooled?

When water is cooled, it turns into ice (solid), and when heated, it turns into steam or vapor (gas), which is not visible to the naked eye.

What are the main stages of the water cycle?

The main stages of the water cycle include evaporation (when water turns into vapor), precipitation (when it falls as rain), and transpiration (when water is absorbed by plants and released through their leaves).

How does water move from the land back to the ocean?

Water from rain or other sources moves from higher land through rivers and streams, eventually flowing back into the oceans.

Can water be completely used up by humans?

No, water doesn't get used up or disappear. It undergoes changes in state and continues to cycle through the environment.