Marine Unit1A Review

What percentage of the earth’s surface is covered in water?

• 63

• 59

• 45

• 70

The hydrosphere includes all of the following except

• seas

• rivers

• gases

• ground water

Most of the world’s fresh water is found in

• Icebergs

• rivers

• lakes

• seas

When the earth’s plates move, this movement can cause which of the following?

• massive forest fires

• thunderstorms

• high tide

• earthquakes

Which of the following is true of the inner core of the earth?

• The lightest elements on the planet can be found there

• It is so hot that the elements vibrate in place.

• The average temperature is 4,000 degrees.

The thinnest layer of the earth is

• the crust.

• the inner core.

• the mantle.

The solid portion of the earth is the

• hemisphere.

• lithosphere.

• hydrosphere.

According to the continental drift theory, what separated the continents?

• the formation of oceans

• an asteroid

• centrifugal force

• numerous volcanoes

Which of the following is true of oceanic plates?

• They move more often than continental plates.

• They are heavier than continental plates.

• They formed before other types of plates.

The example of submarines exploring the ocean floor is used to illustrate that

• technology makes advances in marine science possible.

• submarines make predicting tsunamis possible.

• the ocean floor has many unique features.