Which best explains why the water cycle mostly occurs over the oceans?

Most of Earth’s water is located in the ocean.

Which best explains why upwellings are beneficial to sea life?

They bring needed nutrients to the surface to feed ocean life-forms.

It creates brackish water and a source of nutrients for organisms.

Which best describes 97% of the Earth’s water?

It exists in the form of saltwater in the ocean.

Which best describes how groundwater is obtained from an aquifer?

by drilling a well below the water table

Based on the diagram below, which would be a direct effect of the Gulf Stream current halting circulation?

The European continent would have a much cooler climate.

How does the amount of salt in the ocean compare to the amount of salt in an estuary?

There is more salt in the ocean.

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Unit 6: Hydrology

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Questions 11

Answers

1
What aquatic ecosystem is being shown in the diagram below?
Coral Reef
Resevoir
Estuary
Intertidal Zone
2
Which best explains why the water cycle mostly occurs over the oceans?
The temperatures over the oceans are cooler than over the land.
The temperatures over the oceans are warmer than over land.
Saltwater evaporates more quickly than freshwater.
Most of Earth’s water is located in the ocean.
3
Taking into account all water sources, what percent of Earth's water is accessible and usable by humans? (see image)
99%
97%
3%
1%
4
See question below.
Flooding
Droughts
Earthquakes
Hurricanes and storms
5
Which best explains how a watershed compares to a river basin?
A
D
B
C
6
Which best explains why upwellings are beneficial to sea life?
They bring needed nutrients to the surface to feed ocean life-forms.
They help sea creatures move more quickly through strong currents.
They muddy the water and hide creatures from predators.
They bring warm waters to the surface.
7
See question below.
It provides transportation for plankton and fish.
It helps fishermen reach the deep sea fishing areas much easier.
It keeps seawater from entering the river mouth.
It creates brackish water and a source of nutrients for organisms.
8
Which best describes 97% of the Earth’s water?
It is stored in aquifers.
It is stored in polar ice caps.
It exists in the form of saltwater in the ocean.
It exists in the form of fresh groundwater.
9
Which best describes how groundwater is obtained from an aquifer?
by pumping water into a river basin
by digging into unsaturated flood zones
by extracting large amounts of minerals
by drilling a well below the water table
10
Based on the diagram below, which would be a direct effect of the Gulf Stream current halting circulation?
The North American continent would have a much cooler climate.
The African continent would have a much cooler climate.
The European continent would have a much cooler climate.
The South American continent would have a much warmer climate.
11
How does the amount of salt in the ocean compare to the amount of salt in an estuary?
There is more salt in the ocean.
There is more salt in an estuary.
Neither the ocean nor an estuary contains salt.
There is the same amount of salt in both types of waters.

Unit 6: Hydrology Flashcards | StudBud