May 17 B

May 17 B

8th Grade

25 Qs

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May 17 B

May 17 B

Assessment

Quiz

Biology, Physics

8th Grade

Medium

Created by

Jagtar Singh

Used 2+ times

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the gases below is found at high levels near the surface of the ocean due to plant photosynthesis?

oxygen

neon

nitrogen

carbon dioxide

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the best example of a food chain in a marine ecosystem?

orca whale → seals → algae → salmon

phytoplankton → mussels → otters → tuna fish → octopus

algae → phytoplankton → shark → crab

phytoplankton → krill → herring → mackerel → shark

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Currents caused by differences in water density are most often the result of

uniform salinity and wind.

uniform temperature and salinity.

differences in temperature and salinity.

differences in salinity and wind.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Deep ocean technology has allowed scientists to discover and study organisms living near deep-sea vents. Unlike surface organisms, these organisms survive on a food web based on chemosynthesis instead of photosynthesis. Deep-sea vent organisms live in complete darkness under extreme pressure. What are deep-sea vent organisms evidence of?

a source of light other than sunlight on the ocean floor

the ability of plants to survive without light

the rich diversity of marine life

the harm pollution can do to marine ecosystems

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a benefit of the process of upwelling?

Warm water is brought to the surface of the ocean to increase its coastal air temperature.

The wind sweeps warm water toward the ocean's shore to increase erosion.

Pollutants, such as mercury, are circulated from the ocean's bottom to the surface.

Large amounts of dissolved nutrients are brought to the ocean's surface.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes why estuaries are important resources?

They are the world's richest sources of precious metals.

They are among the most productive types of ecosystems.

They help stabilize the global climate.

They prevent weathering of rock from slopes and cliffs.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which process is diagrammed in the figure below?

Evaporation

tidal surge

continental drift

upwelling

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