Chapter 3 - Our Planet Earth

Front

What is precipitation?

Back

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

Front

What is the cryosphere?

Back

The cryosphere is the frozen part of the hydrosphere, which includes ice caps, glaciers, and snow.

Front

How does a forest fire affect the hydrosphere?

Back

A forest fire can lead to runoff water filled with ash, soot, and debris flowing into waterways, which can pollute them.

Front

In which layer of the atmosphere do meteoroids usually burn up?

Back

Meteoroids usually burn up in the mesosphere.

Front

Which atmospheric layer has the least dense gases?

Back

The exosphere has the least dense gases, meaning it has the least amount of gas molecules present.

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 liquid water is transformed into water vapor, usually due to heat from the sun.

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 the hydrosphere?

Back

The hydrosphere is the combined mass of water found on, under, and above the surface of a planet, including oceans, rivers, lakes, and water vapor.

Front

What is the atmosphere?

Back

The atmosphere is the layer of gases surrounding the Earth, essential for life as it provides oxygen and protects from harmful solar radiation.