Exam # 1

Navigation » List of Schools » Glendale Community College » Oceanography » Ocean 115 – Introduction to Oceanography » Summer 2019 » Exam # 1

Need help with your exam preparation?

Existing Quiz Clients Login here

Below are the questions for the exam with the choices of answers:

Try The Exam

Question #1

What marks the true division between the continental margin and deep ocean basin?

A coastline

B trenches

C abyssal fan

D shelf break

E granite-to-basalt transition

Question #2

What is a typical characteristic of passive continental margins?

A trenches

B narrow continental shelf

C coincides with plate boundary

D volcanic activity

E broad continental shelf

Question #3

What type of geologic feature is formed at the intersection of two converging continental plates?

A Volcanoes

B Mountains

C Rifts

D Subduction zones

E Spreading centers

Question #4

Hydrothermal vents typically form chimneys of _____.

A granitic rock

B sediments

C basaltic rock

D mineral deposits

E carbonate

Question #5

You collect a sediment core from a continental rise that shows successive graded beds deposited one on top of another. Each graded bed has coarse material deposited below finer material. This is evidence of:

A sea level change

B seasonal production of biogenous ooze

C turbidity current deposits

D subduction

E There is not enough information to tell.

Question #6

What is the most likely rock to be found in a drill core of a continental margin?

A Alluvial rock

B Shell

C Carbonate

D Granite

E Basalt

Question #7

Which geological processes explains why the ocean floors are so young?

A erosion

B mountain formation

C transform faulting

D subduction

E rift formation

Question #8

The compressional movement of plate boundaries, such as observed at the Juan De Fuca plate, is representative of which type of boundary?

A Transform

B Spreading center

C Convergent

D Divergent

E Subduction

Question #9

Within Earth’s mantle, convection cells move lithospheric plates toward ____ and away from ____.

A subduction zones; continental crust

B hot spots; spreading centers

C spreading centers; hot spots

D subduction zones; spreading centers

E spreading centers; subduction zones

Question #10

Which of the following is NOT evidence of the oxygen revolution?

A Banded iron formation

B Reduction in UV radiation reaching Earth’s surface

C Evolution of respiring organisms

D Composition of volcanic gases

E Fossil stromatolites

Question #11

Which condition of early Earth would be necessary to allow the process of biosynthesis?

A oxygen-depleted atmosphere

B oxygen in the atmosphere

C ozone in the upper atmosphere

D aerobic conditions

E extreme high temperatures

Question #12

The water for Earth’s ocean originated from ____.

A volcanic activity and comets

B the sun

C volcanic activity and other planets

D solar wind

E other planets

Question #13

As mountains erode, how will isostatic forces cause Earth’s crust beneath the mountain to behave?

A Stay the same

B Rise

C Spread out

D Subduct

E Sink

Question #14

Deep earthquakes typically occur at _____________.

A transform plate boundaries

B fracture zones

C subduction zones

D spreading centers

E mid-ocean ridges

Question #15

Secondary waves (S-waves) are able to pass through which layer of Earth?

A Liquid outer core and solid inner core

B Mantle and liquid outer core

C Crust and mantle

D Mantle, liquid outer core, and solid inner core

E Crust only

Question #16

Which concept describes early Earth as separated into layers by gravity, with each deeper layer denser than the layer above?

A Seismic theory

B Continental drift

C Tectonic theory

D Centrifugal force

E Density stratification

Question #17

How is the surface water above a deep trench in the ocean floor distorted as a result of the trench?

A Sideways distortion

B Upward distortion

C Downward distortion

D No distortion

Question #18

A sound pulse released from an echo sounder returns to the ship in 6.8 seconds. Assuming the speed of sound in ocean water is 4800 ft/sec, how many feet deep is the ocean at this location?

A 706

B 32,640

C 16,320

D There is not enough information to tell

E 353

Question #19

What occurs below the calcium carbonate compensation depth?

A Seawater becomes less acidic.

B Calcium carbonate begins to dissolve.

C The rate of calcareous sediment accumulation is greater than the rate of dissolution.

D Calcareous oozes start to form

E Calcium carbonate begins to precipitate into a solid.

Question #20

Which particle size has the fastest settling velocity in still water?

A coarse silt

B fine sand

C clay

D silt

E coarse sand

Question #21

If someone tells you that they are at 90° latitude, then you know they must be:

A at one of the poles

B opposite the Prime Meridian

C in the Arctic Ocean

D at the International Date Line

E there is not enough information to tell for sure

Question #22

If there is a three hour difference between “clock” noon and “shaft” noon, how many degrees west are you from your point of origin?

A 15°

B 45°

C 180°

D 30°

E 90°

Question #23

Longitude can be found using a protractor and the north polar star.

A TRUE

B FALSE

Question #24

Longitudinal coordinates must always specify a position north or south of the equator.

A TRUE

B FALSE

Question #25

Manganese nodules can grow to exceed 1 meter in diameter within about 100 years.

A FALSE

B TRUE

Question #26

Biological sediments are the most abundant sediments in total volume in the ocean due to the high productivity of organisms along the continental shelf.

A FALSE

B TRUE

Question #27

The western coast of South America is an example of a passive margin.

A FALSE

B TRUE

Question #28

Oceanic crust is both thinner and denser than continental lithosphere.

A TRUE

B FALSE

Question #29

Magma typically rises to the surface at divergent plate boundaries.

A TRUE

B FALSE

Question #30

Seismic waves provide evidence of Earth’s interior layers.

A FALSE

B TRUE

Question #31

The total amount of fresh water on Earth makes up only about 2.5% of all the water near the surface of the planet.

A FALSE

B TRUE

Question #32

Unlike today’s atmosphere, Earth’s early atmosphere lacked free oxygen.

A TRUE

B FALSE

Try The Exam

Fresh Grad Lands Job as Real Estate Agent With Help from Professional Writers

Need help with your exam preparation?

Below are the questions for the exam with the choices of answers:

Christian S.

Tyra

Linda

Manush

We accept payment