Flashcard#4 Hydrosphere - Fresh Water

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, glaciers, and groundwater.

Front

What percentage of Earth's water is freshwater?

Back

Approximately 3% of Earth's water is freshwater.

Front

What is the primary source of freshwater on Earth?

Back

The primary source of freshwater is glaciers and ice caps, followed by groundwater and surface water bodies like rivers and lakes.

Front

How does freezing water contribute to the weathering of rocks?

Back

Freezing water expands in volume, which can cause cracks in rocks to widen and eventually break the rocks apart.

Front

What is the connection between the atmosphere and hydrosphere?

Back

The atmosphere and hydrosphere are connected through processes like precipitation (rain), evaporation, and the water cycle.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth, involving processes such as evaporation, condensation, precipitation, and infiltration.

Front

What role do rivers play in the hydrosphere?

Back

Rivers are vital components of the hydrosphere, serving as channels for freshwater flow, habitats for wildlife, and sources of water for human use.

Front

What is the significance of wetlands in the hydrosphere?

Back

Wetlands act as natural water filters, provide habitat for diverse species, and help in flood control by absorbing excess water.

Front

How much of the Earth's surface is covered by water?

Back

About 70% of the Earth's surface is covered by water.

Front

What is saltwater, and how much of Earth's water is saltwater?

Back

Saltwater is water that contains a significant concentration of dissolved salts, primarily found in oceans; approximately 97% of Earth's water is saltwater.