An oceanographer might study which of the following?

influence of the Loop Current on growth of open-sea algae

Modern biologists still might consult the results of the Challenger expedition to

compare their specimens with those taken by this expedition.

Alfred Wegener proposed which of these ideas?

All continents once were joined into one supercontinent

Multi-beam sonar can be used for which of these?

Producing three-dimensional maps of continental margins

At the San Andreas Fault, which is happening?

Two plates are sliding past each other

A scientific theory has which of the following properties?

It agrees with available evidence

Which is not true of the Pacific?

Its area is equal to that of the Indian Ocean

Continental plates are believed to move because of which of these causes?

The mantle is fluid and carries plates along with it

Which is true of seas?

They are more shallow than the oceans

Which of the following could be a valid scientific hypothesis?

Morays find their prey primarily by following chemical cues

Deep-ocean drilling is useful for studies of

changes in the Earth's climate.

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MB Intro & the Seafloor

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Intro to Marine Biology

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Questions 20

Answers

1
Which is true of scuba gear?
It can be used safely to depths of up to 100 m (300 feet).
It was invented as part of the war effort in World War II
The inventor was a marine biologist stationed at Woods Hole
It uses compressed air.
2
An oceanographer might study which of the following?
influence of the Loop Current on growth of open-sea algae
heat tolerance of coastal barnacles
yearly oxygen production by salt marsh grasses
how mole crabs burrow in sand.
3
Darwin's role in Oceanography included the study of
how snails mate
fossils of seaweed
the life cycle of barnacles
plate tectonics
4
Modern biologists still might consult the results of the Challenger expedition to
look at their charts of the South Pole.
see the results of experiments in their on-board laboratory
consult Edward Forbes' reports on the fauna.
compare their specimens with those taken by this expedition.
5
The Oceans cover about ____% of the earth's surface.
70
60
55
75
6
Alfred Wegener proposed which of these ideas?
All continents once were joined into one supercontinent
The oceanic lithosphere is created by sea-floor spreading.
Magnetic anomalies show th sea floor didn't form all at once
Sea levels dropped during the Ice Ages
7
A coast with an active continental margin will have which feature?
a steep slope
a wide continental shelf
a well-developed continental rise
a broad coastal plain
8
Multi-beam sonar can be used for which of these?
Predicting earthquakes
Producing maps of the positions of ancient continents
Producing three-dimensional maps of continental margins
Studying chemistry of the Earth's core
9
At the San Andreas Fault, which is happening?
Volcanoes are forming
Two plates are colliding
Two plates are sliding past each other
One plate is moving under another
10
A scientific theory has which of the following properties?
It agrees with available evidence
It has been absolutely proven.
It does not need to be altered in the light of new evidence
It cannot be rejected.
11
Which of these features can be found off the eastern coast of the United States?
oceanic rise
submarine canyon
trench
guyot
12
Which is not true of the Pacific?
Its area is equal to that of the Indian Ocean
It is geologically the newest ocean
It contains the deepest trench
It contains island arcs
13
To find the oldest rocks in the ocean, where should you look?
near trenches
near volcanoes
at hydrothermal vents
on top of mid-ocean ridges
14
Which of these features is not used as evidence of continental drift?
signs of rising sea levels
similar fossils on either sides of oceans
bands of magnetic anomalies along mid-ocean ridges
similar rock formations on either sides of oceans
15
Continental plates are believed to move because of which of these causes?
Cooling lithosphere becomes dense, sinks, pulls a plate with
Plates crack along fault lines
New volcanic rock pushes them away from spreading center
The mantle is fluid and carries plates along with it
16
To conduct a controlled experiment, a scientist usually
works in a laboratory
changes the conditions in the natural environment
takes careful measurements at sea.
sets out equipment in the ocean
17
The voyages of Captain Cook provided which of the following?
reliable navigational charts
an explanation for the formation of atolls.
soundings of the deep sea
the first exploration of northern polar regions
18
Which is true of seas?
They can contain the greatest average depths
They form a continuous body of water around Antarctica
They always are cut off from the main ocean basins
They are more shallow than the oceans
19
Which of the following could be a valid scientific hypothesis?
It is immoral to keep dolphins in captivity
Dolphins communicate by using brain waves
Dogs are superior in regard to seals
Morays find their prey primarily by following chemical cues
20
Deep-ocean drilling is useful for studies of
mountain formation
changes in the Earth's climate.
modern down-slope sediment transport
mineral deposition at black smokers.

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