Chapter 3 Study Guide - Geology of the Ocean

The solar system formed ____ billion years ago.

• 4

• 5

• 6

• 7

• 8

Gaseous oxygen formed in the earth's atmosphere as a result of:

• outgassing from the interior of the planet.

• respiration of bacteria.

• input from outer space

• photosynthesis

It has been proposed that the first living organisms were:

• heterotrophs.

• autotrophs.

• chemosynthetic.

• photosynthetic.

• multicellular

The first heterotrophs obtained their energy from

• autotrophs.

• chemosynthetic organisms.

• organic material in the ocean.

• photosynthetic organisms.

The ocean is frequently referred to as:

• circumpolar ocean.

• seven seas.

• world ocean.

• Indo-Pacific Ocean.

• the cradle of civilization.

A small area more or less landlocked is called:

• the seven seas.

• a world ocean.

• an ocean.

• a sea.

• a marine province.

The thickest of earth's physical layers is the:

• crust.

• mantle.

• inner core.

• outer core.

• athenosphere.

The region of the mantle below the crust is called:

• the asthensophere.

• the mantle.

• the lithosphere.

• the outer core.

The solid region of crust and upper mantle is called:

• the asthenosphere.

• the mantle.

• the lithosphere.

• the outer core.

• the inner core.

The continental crust is primarily comprised of all the following EXCEPT:

• granite-type rock.

• basalt-type rock.

• quarts-type rock.

• silicon-type rock

• sedimentary-type rock.