The Earth’s Water

key notes :

Water Distribution on Earth:

• About 71% of the Earth’s surface is covered by water.
• Most of Earth’s water is in oceans (about 97%).
• Only 3% of Earth’s water is freshwater, and most of it is trapped in ice caps and glaciers.

Types of Water:

• Saltwater: Found in oceans and seas, and is not suitable for drinking.

• Freshwater: Found in rivers, lakes, and groundwater. It is used for drinking, agriculture, and daily needs.

Water Cycle:

• Evaporation: Water from oceans, rivers, and lakes turns into vapor and rises into the atmosphere.
• Condensation: Water vapor cools down and forms clouds.
• Precipitation: Water falls back to Earth in the form of rain, snow, or hail.
• Collection: Water collects in oceans, rivers, lakes, and underground reservoirs.

Importance of Water:

• Supports life: Water is essential for all living organisms, including humans, animals, and plants.

• Agriculture: Plants need water for growth, and it is used to irrigate crops.

• Drinking water: Humans need freshwater for drinking and sanitation.

Conservation of Water:

• Water is a limited resource, so it’s important to use it wisely.
• Simple actions like turning off taps when not in use, fixing leaks, and using less water in daily activities can help conserve it.

Let’s practice!