Unit 3 The Earth System Unit Review

Front

What is freshwater?

Back

Freshwater is water that has low concentrations of dissolved salts, making it essential for human survival and various ecosystems.

Front

Why is only a small amount of freshwater available for human use?

Back

Most of the Earth's freshwater is trapped in glaciers, ice caps, or underground, leaving only a small percentage accessible for human consumption.

Front

What is the atmosphere?

Back

The atmosphere is the layer of gases surrounding the Earth, essential for weather, climate, and supporting life.

Front

What are the four main Earth systems?

Back

The four main Earth systems are the hydrosphere (water), geosphere (land), atmosphere (air), and biosphere (living things).

Front

How do the atmosphere and hydrosphere interact during rainfall?

Back

When clouds in the atmosphere become heavy with water vapor, they release rain, demonstrating the interaction between the atmosphere and hydrosphere.

Front

What is the biosphere?

Back

The biosphere is the global sum of all ecosystems, where living organisms interact with each other and their environment.

Front

How can planting trees on hills affect the environment?

Back

Planting trees on hills can reduce flooding by stabilizing soil and absorbing excess water, thus impacting the biosphere.

Front

What is an explanation?

Back

An explanation is a description of how something works or why something happens, providing clarity and understanding.

Front

What role does the hydrosphere play in the Earth system?

Back

The hydrosphere includes all water on Earth, influencing weather patterns, climate, and supporting life.

Front

What is the geosphere?

Back

The geosphere refers to the solid parts of the Earth, including rocks, soil, and landforms.