ES 8 test review

Front

Looking at the diagram for the different groundwater zones, what is labeled 1?

Back

Zone of Aeration

Answer explanation

The Zone of Aeration, labeled as 1, is the area above the water table where soil and rock are not fully saturated with water. It contains both air and water, distinguishing it from the Zone of Saturation below.

Front

Looking at the map of Virginia, which major watershed is indicated by number 1?

Back

The Chesapeake Bay Watershed

Answer explanation

The Chesapeake Bay Watershed is the largest watershed in Virginia, draining into the Chesapeake Bay. It encompasses many rivers and streams, making it the correct choice for number 1 on the map.

Front

Looking at the diagram for the different groundwater zones, what is labeled 2?

Back

Water Table

Answer explanation

The label '2' in the groundwater zones diagram refers to the Water Table, which is the boundary between the Zone of Saturation below and the Zone of Aeration above.

Front

Looking at the diagram for the different groundwater zones, what is labeled 3?

Back

Zone of Saturation

Answer explanation

The correct answer is 'Zone of Saturation' because this zone is where all the spaces between soil and rock are filled with water, distinguishing it from the water table and other zones.

Front

Looking at the diagram for the different groundwater zones, what is labeled 4?

Back

Confining Layer

Answer explanation

The Confining Layer, labeled as 4, is the layer that restricts the flow of groundwater, separating the Zone of Saturation from the Zone of Aeration above it. This layer is crucial for maintaining groundwater levels.

Front

Looking at the map of Virginia, which major watershed is indicated by number 2?

Back

The Gulf of Mexico Watershed

Answer explanation

The Gulf of Mexico Watershed is the correct answer as it encompasses a significant portion of Virginia's rivers and streams that flow into the Gulf, distinguishing it from the other options listed.

Front

Looking at the map of Virginia, which major watershed is indicated by number 3?

Back

The North Carolina Sound Watershed

Answer explanation

The North Carolina Sound Watershed is the correct choice as it encompasses areas in Virginia, while the other options refer to different watersheds that do not match the indicated number on the map.

Front

Which one of the rock samples shown would most likely be found in the confining layer (made of impermeable rock)? Options: Rock 1, Rock 2, Rock 3, Rock 4, Dwayne "The Rock" Johnson

Back

Rock 2

Answer explanation

Rock 2 is most likely found in the confining layer because it is impermeable, preventing water from passing through. This characteristic is essential for a confining layer, unlike the other rocks which may be more permeable.

Front

Wells are most likely to be successful in areas with - Very fast porosity, Extremely low permeability, Underlying impermeable soil layers that can trap water, Topography allowing for quick infiltration, People that invite friends to El Ranchero

Back

Underlying impermeable soil layers that can trap water

Answer explanation

Wells are most successful where there are underlying impermeable soil layers that trap water, creating a reservoir. This prevents water from escaping, ensuring a reliable water supply.

Front

Approximately what percentage of water on the planet Earth, is considered to be freshwater?

Back

3%

Answer explanation

Only about 3% of the Earth's water is freshwater, while the remaining 97% is saltwater found in oceans. This makes 3% the correct answer to the question.