Hydrosphere Test Grade Recovery

Front

What is upwelling?

Back

Upwelling is the process where cool, dense surface water sinks and pushes deep water up to the surface, bringing nutrients with it.

Front

What percentage of Earth's water is freshwater?

Back

Approximately 3% of Earth's water is freshwater.

Front

What technology is used for underwater mapping?

Back

Sonar is the technology used for underwater mapping to determine the depth of water and locate objects.

Front

Who is the primary producer in an aquatic food chain?

Back

Phytoplankton is the primary producer in an aquatic food chain.

Front

What does turbidity measure?

Back

Turbidity measures how clear or cloudy a substance is.

Front

What is the main component of the hydrosphere?

Back

The hydrosphere includes all the water on Earth, including oceans, rivers, lakes, and groundwater.

Front

What is salinity?

Back

Salinity is the measure of the amount of salt dissolved in water.

Front

What is a bioindicator?

Back

A bioindicator is a species or group of species used to assess the health of an ecosystem.

Front

What is eutrophication?

Back

Eutrophication is the process where water bodies become overly enriched with nutrients, leading to excessive growth of algae.

Front

What role do phytoplankton play in aquatic ecosystems?

Back

Phytoplankton are crucial as they produce oxygen and serve as the base of the aquatic food web.