OCEANS AND SEAS

Oceans cover about ______ of the surface of the earth.

• 60%

• 70%

• 80%

• 90%

The deepest parts of the ocean are called

• trenches

• abyss

• deep sea plain

• guyot

Underwater volcanoes with flat tops are known as

• shelf

• abyss

• guyots

• slope

Winds blowing across the surface of the oceans and seas cause them to move in ripples called ________

• tides

• waves

• current

• motion

People who study oceans are called

• oceanographists

• oceaners

• oceanists

• oceanographers

Which ocean covers the largest percentage of the earth's surface?

• Atlantic

• Arctic

• Indian

• Pacific

When a mountain sticks out of the water an ______________ is formed.

• Volcano

• land mass

• big rock

• Island

The sides of the mid-ocean ridges slope down to the ______________________ which are flat due to accumulation of sediments.

Trenches occur due to a process called ____________________.

• weathering

• deposition

• erosion

• subduction

A ____________is a string of volcanic islands that are formed where two techtonic plates meet.

• guyot

• sea mount

• island arc

• abyssal hills