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Geologic Time
Dating
Ocean water
Currents and waves
This-n-that
100
It is the idea that change on Earth happens quickly and suddenly.
What is catastrophism?
100
It is the dating type that attempts to sequence geologic events.
What is relative dating?
100
It is the total amount of dissolved solids in ocean water.
What is salinty?
100
It is the name given to the circular motion of surface currents.
What is a gyre?
100
It is the interface between the land and the ocean.
What is a beach or shoreline?
200
It says that older rock layers are found below younger rock layers.
What is the Law of Superposition?
200
It is a rock layer that is contained in another rock layer.
What is an intrusion?
200
It is one of three ways that the salinity of sea water can be changed.
What is evaporation, ice formation, and/or addition of fresh water?
200
It is the main cause of ocean waves
What is wind/storms at sea?
200
It is a depositional feature caused by waves or currents.
What is a (beach, barrier island, spit.....)?
300
It says that sedimentary rock layers are deposited flat and straight.
What is the Principle of Original Horizontality?
300
It is a special type of fossil used to determine the actual age of a rock.
What is an index fossil?
300
It is the factor that determines the temperature of sea water?
What is sunlight/solar energy?
300
They are the two factors that shape surface ocean currents.
What are continental deflections and the Coriolus Effect (Earth's rotation)?
300
It is the movement of sand parallel to the shoreline.
What is longshore current?
400
Geologic principle that says "the present is the key to the past."
What is Uniformitarianism?
400
It is what a radioactive element can become over time.
What is a decay element?
400
They are two factors that determine the density of ocean water.
What are salinity and temperature?
400
They are the two factors that create deep ocean currents.
What are salinity and temperature (density)?
400
It is the main cause of ocean tides.
What is the moon's gravity?
500
It is a rock surface that has been weathered and eroded and is thus missing time from the normal sequence.
What is an unconformity?
500
It is the time it takes for half of a radioactive element to decay or break down.
What is a half life?
500
It is the name for the change in density with depth in ocean water.
What is the pynocline?
500
It is the main factor that determines wave height.
What is wind speed or fetch
500
It is the name given to the higher than normal high tides that occur once per month.
What is Spring tide?