Lesson 3 - Water Cycle

Front

What is the water cycle?

Back

The water cycle is the continuous process by which water moves from the Earth's surface to the atmosphere and back, involving processes like evaporation, condensation, and precipitation.

Front

What is evaporation?

Back

Evaporation is the process by which water changes from a liquid to a gas (water vapor) due to heat.

Front

What is condensation?

Back

Condensation is the process by which water vapor cools and changes back into liquid water, forming clouds.

Front

What is precipitation?

Back

Precipitation is any form of water that falls from clouds to the Earth's surface, including rain, snow, sleet, and hail.

Front

What is transpiration?

Back

Transpiration is the process by which water is absorbed by plants and then released as water vapor into the atmosphere.

Front

What is runoff?

Back

Runoff is the flow of water, from rain or melting snow, that moves across the ground and returns to bodies of water.

Front

What percentage of Earth's water is freshwater?

Back

Only about 3% of Earth's water is freshwater, and only 1% of that is accessible for human use.

Front

What is groundwater?

Back

Groundwater is water that is stored underground in soil and rock layers, and it is a significant source of drinking water.

Front

Why is runoff important?

Back

Runoff is important because it returns water to rivers, lakes, and oceans, helping to maintain the water cycle.

Front

What happens to rainwater after it falls?

Back

Rainwater can form puddles, soak into the ground, or run off into rivers and lakes.