Ocean 100- Exam 3 (SDSU) |87 Questions and Answers
coast - -land extending inland as far as marine influence is seen
-offshore - -extends from breakers to edge of continental shelf
-beach - -shore and nearshore; very active (where waves break)
-berm - -dry area at the foot of coastal cliff (where the sand is and you put your towel)
-Berm floods when.... - --very high tide
-tsunami
-storm swells/ breakers
-wave- cut platform - -flat eroded bedrock at beach, by wave energy
-notch - -cave cut into the sea cliff by wave energy
-near shore - -where breakers occur
-coastline - -line that separates beach from land
-sources of sand to the beach - -- continental erosion
- rivers dumping sediment into the sea
-summertime beach - --wave energy is low
-sandy beach
-wide berm
-wintertime beach - --wave energy is high
-rocky beach
-narrow berm
-drift - -net movement of sand grains (longshore drift)
-longshore current - -movement of water in surf zone, parallel to the coast
-why does longshore current move water parallel to the coast - --waves come at an angel
-depends on where waves first start breaking
-due to the winds
-where does the longshore current move in Southern California - -N-S
-how does sand get moved - --rivers supply sediment
-longshore currents carry sands
, -dump into submarine canyon
-what are the 2 types of coasts - -depositional coast and erosional coast
-depositional coast - --not active
-flat coast
-subsidence (east/south coast)
-deposit sediment
-submerging coast (sinking)
-deltas, barrier islands
-erosional coast - --tectonic uplift (west coast)
-active
-plate boundary
-ex. sunset cliffs
-cliffs
-headlands, sea caves, arches, stacks
-emergent coast (rising)
-marine terraces
-how are headlands, sea caves, arches, and stacks made? - -the waves eroding them
-pacific coast - --erosional
-ocean does not migrate inland
-Atlantic coast - --depositional
-oceans migrate inland a lot
-gulf coast - --below sea level
-ocean would migrate the farthest inland
-why has the global sea level changed - --climate change
-tectonics
-climate change - --global warming
-ice ages
-related to convention because warm water rises, cold water sinks
-global warming - -- sea level rises (thermal expansion)
-ice ages - -sea level falls (thermal contraction)
-tectonics: mid- ocean ridges: - --fast spreading rates at ridges... sea level rises
-slow spreading rates at ridges... sea level falls
-promitory - --piece of land that sticks out near a beach
coast - -land extending inland as far as marine influence is seen
-offshore - -extends from breakers to edge of continental shelf
-beach - -shore and nearshore; very active (where waves break)
-berm - -dry area at the foot of coastal cliff (where the sand is and you put your towel)
-Berm floods when.... - --very high tide
-tsunami
-storm swells/ breakers
-wave- cut platform - -flat eroded bedrock at beach, by wave energy
-notch - -cave cut into the sea cliff by wave energy
-near shore - -where breakers occur
-coastline - -line that separates beach from land
-sources of sand to the beach - -- continental erosion
- rivers dumping sediment into the sea
-summertime beach - --wave energy is low
-sandy beach
-wide berm
-wintertime beach - --wave energy is high
-rocky beach
-narrow berm
-drift - -net movement of sand grains (longshore drift)
-longshore current - -movement of water in surf zone, parallel to the coast
-why does longshore current move water parallel to the coast - --waves come at an angel
-depends on where waves first start breaking
-due to the winds
-where does the longshore current move in Southern California - -N-S
-how does sand get moved - --rivers supply sediment
-longshore currents carry sands
, -dump into submarine canyon
-what are the 2 types of coasts - -depositional coast and erosional coast
-depositional coast - --not active
-flat coast
-subsidence (east/south coast)
-deposit sediment
-submerging coast (sinking)
-deltas, barrier islands
-erosional coast - --tectonic uplift (west coast)
-active
-plate boundary
-ex. sunset cliffs
-cliffs
-headlands, sea caves, arches, stacks
-emergent coast (rising)
-marine terraces
-how are headlands, sea caves, arches, and stacks made? - -the waves eroding them
-pacific coast - --erosional
-ocean does not migrate inland
-Atlantic coast - --depositional
-oceans migrate inland a lot
-gulf coast - --below sea level
-ocean would migrate the farthest inland
-why has the global sea level changed - --climate change
-tectonics
-climate change - --global warming
-ice ages
-related to convention because warm water rises, cold water sinks
-global warming - -- sea level rises (thermal expansion)
-ice ages - -sea level falls (thermal contraction)
-tectonics: mid- ocean ridges: - --fast spreading rates at ridges... sea level rises
-slow spreading rates at ridges... sea level falls
-promitory - --piece of land that sticks out near a beach
