Quiz 7

Coral reefs

are made of animals living symbiotically with simple algae.

Seawater with less than 35‰ is termed

brackish

Over the past decade, the salinity of high-latitude oceans has ________ due to________.

declined; freshwater inputs from melting ice

A general term for the coastal area and shallow offshore environment is

littoral zone

In which of the following areas would one expect to find lower than average seawater salinity?

near landmasses and in areas with low evaporation

Within the Northern Hemisphere, salt marshes form ________, whereas mangrove swamps form ________.

north of 30°; within the tropics

Within the deep cold zone, average temperature and salinity

remain fairly constant with depth

Which of the following is not an example of a depositional coastal landform?

sea arch

When the Sun and Moon are on the same side Earth or on opposite sides of earth, the ________ occurs and results in the ________ tidal range between low and high tides.

spring tides ;greatest

Which of the following region would you expect to have the highest levels of seawater salinity?

subtropical oceans

Coral and algae have a reciprocal in which both are dependent on the other for survival. The general term for such a relationship is

symbiotic

Sudden motion in the seafloor from an earthquake, landslide, or volcano create waves with wavelengths exceeding 100 km (60 mi) called

tsunamis.

The height of a tsunami grows as it approaches a coastline primarily because

wavelengths shorten

A major difference between a barrier island and a barrier spit is

a barrier spit is connected to the mainland, whereas a barrier island is not.