WorksheetsChapter 16: Oceans and Coastal Systems Quiz
Total questions: 20
Worksheet time: 15mins
Approximately what percentage of the world's population lives near the ocean?
33%
25%
40%
70%
Approximately what percentage of the United States' population lives in coastal areas?
17%
22%
53%
81%
Globally, over ________ million people live in low-elevation coastal areas that are less than 30 m (98 ft.) above sea level.
12
36
333
630
What is the difference between an ocean and a sea?
The term sea is used to describe the global, interconnected water body covering 70% of the Earth's surface, whereas oceans refer to the individual basins within this global sea.
An ocean is a vast body of water encompassing 70% of the Earth, whereas a sea refers specifically to a large, inland, saline body of water.
Seas are generally smaller than an ocean and tend to be at least partly enclosed by land, such as large, inland, saline water bodies.
Oceans tend to be composed primarily of salt water, while seas tend to be composed of a near even mixture of brackish and fresh water.
Which of the following statements best describes seawater?
Seawater is pure water (H20).
Seawater is a solution.
The chemical composition of seawater has little spatial variability.
The salinity of seawater is negligible.
The chemical composition of seawater may be affected by
the atmosphere only.
minerals only.
marine organisms only.
the atmosphere, marine organisms, minerals, and ocean sediments.
The worldwide average salinity of seawater is
0.05%.
3.5%.
5.5%.
7.5%.
Increasing ocean acidification has been attributed to
changes in thermohaline circulation associated with the Pacific Decadal Oscillation.
freshwater inputs from melting ice.
coastal erosion caused by changes in stream flow and increased precipitation.
ocean absorption of excess atmospheric carbon dioxide.
Within the mixing zone and thermocline, average temperature and salinity
decrease with depth.
increase with depth.
remain fairly constant with depth.
decrease within the mixing zone, but increases within the thermocline.
Which of the following is true of the Earth's coastlines?
Most of the Earth's coastlines are relatively young and undergoing continuous change.
The Earth's coastlines are among the oldest landforms on the planet.
There are few inputs that directly affect the Earth's coastlines beyond tidal action.
The Earth's coastlines show a remarkable degree of similarity across the planet.
Which of the following is not true of the inputs to Earth's coastal environments?
Compared to other inputs, human activities are insignificant coastal inputs.
Solar energy inputs drive prevailing winds, weather systems, and climates.
Atmospheric winds generate ocean currents and waves.
Coastal geomorphology is important in determining rates of erosion and deposition.
A general term for the coastal area and shallow offshore environment is
shoreline.
coast.
beach.
littoral zone.
Which of the following is not correct regarding tides?
They are produced solely by the gravitational pull of the Sun.
They are complex twice daily oscillations in sea level.
They are influenced by the size, depth, and topography of ocean basins.
They are influenced by shoreline configuration and latitude.
Wave action works to straighten a coast as wave energy focuses around headlands and tends to disperse energy in coves and bays in a process called
longshore current.
breakers.
wave refraction.
tidal bore.
Which of the following is not an example of an erosional coastal landform?
sea arch
tombolo
wave-cut platform
notched cliff
Which of the following is not an example of a depositional coastal landform?
wave-built terrace
barrier spit
bay barrier
wave-cut platform
Beaches are
places where sediment is stable and unchanging.
permanent coastal features.
places along the coast where sediment is reworked and deposited.
always composed of sand.
Human intervention along a coastline intended to interrupt beach drift can include all of the following except
tombolos.
jetties.
breakwaters.
beach nourishment.
Depositional coastlines are also known as
barrier coastlines.
terraced coastlines.
emergent coastlines.
submergent coastlines.
Areas in which the land is typically rising in relation to sea level are called
wave refraction.
tidal bore.
emergent coastlines.
submergent coastlines.
