A Survey of the Seas
The Atmosphere
100

What device has an open tube that brings back narrow cores of sediment from the ocean floor?

Gravity Corer

100

What is the most important and abundant greenhouse gas?

Water vapor

200

What is a wave that grows taller and steeper as it travels to shore and topples forward with a white crest?

Breaker

200

What is the coldest point in the atmosphere?

Mesopause

300

What substance makes up most of the salt in the oceans?

Sodium chloride

300

 What global winds blow from the east toward the west, between 30° and 0° latitude?

Trade winds

400

What is an upward-flowing current that occurs when a land breeze pushes surface water away from the coast?

Upwelling

400

What name is given to the upper atmosphere because of its distinct gas layers?

Heterosphere

500

What device do oceanographers use to measure the temperatures at different levels and report them back to a surface ship?

Expendable Bathythermograph

500

What global winds occur at high latitudes and move away from the poles?

Polar Easterlies

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