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Hydrosphere Unit Exam Review #1

Authored by Beth Hall-Love

Science

8th Grade

Used 6+ times

Hydrosphere Unit Exam Review #1
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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where does most fresh water exist?

ice caps, lakes, and streams

glaciers, rivers, and oceans

aquifers, ice caps, and glaciers

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A family living in a house needs to dig a new well before they will have usable water. Several options for the well location are shown in the diagram. Which location would be the best choice for the new well?

Q

R

S

T

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which would most likely cause a sudden increase of nitrates in a waterway?

spill from an oil tanker

runoff from a boat yard

runoff from a golf course

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The figure shows the zones of the ocean. Coral reefs require sunlight because reef-building coral contain photosynthetic algae in their tissues. The reefs must sit on the ocean floor for support and must remain underwater to survive. In which ocean zone does a reef most likely thrive?

oceanic zone

benthic zone

neritic zone

intertidal zone

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which best explains why there is a greater concentration of oxygen located near the ocean’s surface?

Sunlight warms the ocean’s temperature and stimulates oxygen production near the surface

Plankton produces excess amounts of nutrients that remove oxygen levels from the atmosphere

Marine life gives off oxygen instead of carbon dioxide, which makes the ocean water rich in oxygen

Plants, which release oxygen, live near the surface of the ocean, where they receive large amounts of sunlight

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which are the most abundant dissolved gases in ocean water?

nitrogen and carbon dioxide

oxygen and carbon dioxide

oxygen and methane

nitrogen and sulfide

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which would most likely result in an unhealthy aquatic habitat?

a decrease in turbidity

a decrease in nitrates levels

an increase in water temperature

an increase in dissolved oxygen levels

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