Ocean Chemistry and Geological Processes

Ocean Chemistry and Geological Processes

Assessment

Interactive Video

Chemistry, Science

7th - 10th Grade

Hard

Created by

Olivia Brooks

FREE Resource

The video explores the mystery of ocean salinity, initially thought to be caused by rivers. In 1979, the discovery of black smokers revealed that ocean water cycles through the Earth every 6 to 8 million years, exchanging chemicals with the Earth's interior. This process, occurring along the mid-ocean ridge, explains the unique chemistry of the world's oceans.

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the initial assumption about the source of the ocean's salinity?

Underwater vents

Volcanic eruptions

Rivers

Rainfall

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are black smokers?

Volcanic eruptions

Deep-sea fish

Micro crystals of minerals

Large oceanic waves

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In what year were black smokers discovered?

1999

1989

1979

1969

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How often does the entire volume of the world's oceans cycle through the Earth's interior?

Every 10-12 million years

Every 6-8 million years

Every 3-4 million years

Every 1-2 million years

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What process occurs along the mid-ocean ridge?

Formation of new oceanic crust

Creation of deep-sea trenches

Exchange of chemicals between ocean and Earth

Eruption of underwater volcanoes

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of magma chambers in ocean chemistry?

They form coral reefs

They create ocean currents

They provide minerals for chemical exchange

They heat the ocean water

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What analogy is used to describe the mid-ocean ridge?

A river delta

A mountain range

A seam on a baseball

A zipper