Chapter 15 Flashcards
In this drawing, the net movement of sand is 15
up the coast (toward the upper side).
This photograph of a shoreline in Washington shows a 15b
wave-cut platform
If you found ancient rocks in Antarctica that had formed in an organic reef, what could you suggest?
that the climate has changed and that Antarctica has moved
The path of movement of a water particle in a wave at sea is
circular
The horizontal distance between two successive waves’ crests is called
wave length
Ordinary ocean waves derive their energy from
winds
Which of the following is NOT a depositional feature?
sea stack
These drawings show the various stages of evolution for a hypothetical coastline. The correct order for these drawings is 15c
C, A, B, D.
Approximately what percentage of the Earth’s surface is covered with water?
70%
When sea level rises, the ocean may invade a river valley, producing a nearshore body of water of mixed and variable salinity termed a(n) _____.
estuary
Waves and wave motion.
circular motion
Waves come in at
(sand moves same direction as waves)
-Seastack-
—__-__
stack out in sea
Sea arch
sea stack before it breaks (rainbow bridge)
Tombolo-
strip of sand between seastack and shore
bird foot, waves pulling beach out
Spit-
longshore drift- extends beach across bay
Atoll-
ring of reef that builds up around volcano (sinks)
Barrier island
—-____—– Island parallel to shore
Transgression-
More water on land (sea level rises)- fine grained
Regression-
Water goes out- coarse grained
Coarse grained-
Fine grained-
land
shallow water
Transgression
More water on land (sea level rises)- fine grained
Regression-
Water goes out- coarse grained
Chesapeake Bay-
weird coastline- rise in sea level causes half of the island to be underwater, Transgression
What does wave refraction have to do with the shape of the land?
Waves focus more energy on land sticking out—Flattening out the coastline
