Site MapHelpFeedbackLevel 1 Quiz
Level 1 Quiz
(See related pages)



1

The Oceans cover about 55% of the earth's surface.
A)True
B)False
2

Of all the oceans, the Pacific has the deepest trench.
A)True
B)False
3

Alred Wegener proposed which of these ideas?
A)All continents once were joined into one supercontinent.
B)Magnetic anomalies show that the sea floor did not form all at once.
C)The oceanic lithosphere is created by sea-floor spreading.
D)Sea levels dropped during the Ice Ages
4

The Arctic Ocean is a major basin that is cut off from all others.
A)True
B)False
5

The Earth's innermost layer, or core, consists mainly of solid and liquid granite.
A)True
B)False
6

Oceanic crust consists mainly of basalt and is denser than continental crust.
A)True
B)False
7

Magnetic anomalies are bands of rock that run at right angles to the mid-ocean ridge system.
A)True
B)False
8

The San Andreas Fault in California is an example of a spreading center.
A)True
B)False
9

The Himalaya mountains formed from the collision of a seafloor and a continental plate.
A)True
B)False
10

The Aleutian islands formed from the collision of two seafloor plates.
A)True
B)False
11

In general, the seafloor crust is much older than the continental crust.
A)True
B)False
12

Red clay is an example of a biogenous sediment.
A)True
B)False
13

To perform carbon dating on marine sediments, one generally needs which of these?
A)microfossils
B)lithogenous sediments
C)sulfide compounds
D)siliceous ooze
14

Siliceous sediments are biogenous oozes formed mostly from shells of microscopic organisms.
A)True
B)False
15

Sea levels were higher during the ice ages due to the large number of glaciers entering the oceans.
A)True
B)False
16

A coast with an active continental margin will have which feature?
A)a wide continental shelf
B)a well-developed continental rise
C)a steep slope
D)a broad coastal plain
17

In the Hawaiian island chain, the islands are older the farther west they are.
A)True
B)False
18

Hot spots, which create volcanoes, are always found on spreading-center ridges.
A)True
B)False
19

Multibeam sonar can be used for which of these?
A)Studying chemistry of the Earth's core
B)Producing three-dimensional maps of continental margins
C)Producing maps of the positions of ancient continents
D)Predicting earthquakes
20

Black smokers are chimney-like deposits formed when molten seafloor basalt emerged at a rift valley and cooled upon contacting seawater.
A)True
B)False
21

Which of these features is not used as evidence of continental drift?
A)similar rock formations on either sides of oceans
B)similar fossils on either sides of oceans
C)signs of rising sea levels
D)bands of magnetic anomalies along mid-ocean ridges.
22

An example of a subduction zone is
A)the East Pacific Rise.
B)The San Andreas Fault.
C)the Mariana Trench.
D)the seafloor bordering eastern South America.
23

The ancient ocean called Panthalassa became the ancestor of which ocean?
A)Atlantic
B)Pacific
C)Indian
D)Arctic
24

The biologically richest part of the seafloor is
A)the continental shelf.
B)the continental slope.
C)the plain.
D)deep-sea fans.
E)the abyssal plain.





To learn more about the book this website supports, please visit its Information Center.
(c)2007 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


Marine Biology, 6eOnline Learning Center

Home > Chapter 2 > Level 1 Quiz