Our Hydrosphere Unit Review

Front

Define a watershed in your own words.

Back

A watershed is a region that drains into a river or body of water.

Front

What are the characteristics of streams in the lower reaches?

Back

Lower reaches of streams are meandering, shallow, have a very slight slope, and a bottom full of sediment.

Front

What are the deepest parts of the ocean called?

Back

The deepest parts of the ocean are called trenches.

Front

What is the primary cause of most water pollution?

Back

Most water pollution is the result of human activities.

Front

What are benthic macroinvertebrates and why are they significant in water quality assessment?

Back

Benthic macroinvertebrates are organisms that live on the bottom of water bodies and are used as indicators of water quality. They are significant because they are sensitive to pollution and environmental changes.

Front

What is the hydrosphere?

Back

The hydrosphere is the combined mass of water found on, under, and above the surface of a planet.

Front

What is the difference between point source and non-point source pollution?

Back

Point source pollution comes from a single, identifiable source, while non-point source pollution comes from multiple, diffuse sources.

Front

What role do wetlands play in the hydrosphere?

Back

Wetlands act as natural water filters, help control flooding, and provide habitat for wildlife.

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, including processes like evaporation, condensation, and precipitation.

Front

Define groundwater.

Back

Groundwater is water that is stored beneath the Earth's surface in soil pore spaces and fractures of rock formations.