Ch 16: Oceans

Ch 16: Oceans

6th Grade

19 Qs

quiz-placeholder

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Ch 16: Oceans

Ch 16: Oceans

Assessment

Quiz

Science

6th Grade

Medium

Created by

Paula Bures

Used 1+ times

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19 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are Earth's oceans salty?

Rain washed salts into them.

They contain a loft of water vapor.

Algal blooms in the ocean produce salt.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which description best characterizes the sea floor?

mostly flat

full of life-forms

similar to the continents

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ocean waves move water

to form tides.

long distances.

in a circular motion.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ocean surface currents are caused by

wind.

gravity.

density.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Density currents move ocean water

upward.

downward.

horizontally.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which situation describes a point-source ocean pollutant?

nitrates mixed in runoff

a nearby volcanic eruption

oil spills from several ships

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What causes coral bleaching?

slight changes in water temperatures

an increase in carbon dioxide in the water

strong winds that blow for long periods of time

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