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Midterm Chapter 1
Midterm Chapter 1 Caillet
34
History
8th Grade
12/11/2011

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Cards

Term
What do geologists believe the land masses on the earth looked like 250 million years ago?
Definition
they were all connected
Term
What does the word Pangaea mean?
Definition
all land
Term
What was different about North and South America and the Gulf of Mexico 250 million years ago?
Definition
no gulf
Term
When did Pangaea begin breaking apart?
Definition
end of Paleozoic era
Term
What was the continental drift?
Definition
Pangaea breaking
Term
During the time of the Continental Drift, where was the Gulf of Mexico located?
Definition
all of Louisiana
Term
How was Louisiana formed?
Definition
from sediment
Term
Why is the formation of Louisiana considered unique?
Definition
because it formed from sediment
Term
What was the Ice Age?
Definition
everything was frozen
Term
What happened to water levels during the Ice Age?
Definition
they rose
Term
Where did Louisiana's coastline extend during this time?
Definition
south
Term
What is the continental shelf?
Definition
the edge of all the gulfs land masses
Term
How and when did the Louisiana coastline and Gulf of Mexico reach its present day appearance?
Definition
the end of the ice age
Term
What is a delta?
Definition
it flooded
Term
How are deltas shaped?
Definition
when rivers flow into an ocean
Term
What is the most famous delta?
Definition
birds foot or fan
Term
What is a popular place to visit along Louisiana's coast?
Definition
Mississippi river
Term
What is so unusual about Grand Isle?
Definition
grand isle
Term
How much does Grand Isle move in a year?
Definition
it moves
Term
What happened to Grand Isle in 2005?
Definition
16ft
Term
What is one of the greatest threats facing Louisiana today?
Definition
hurricane Katrina hit it
Term
How much land disappears in a year?
Definition
coastal erosion
Term
How much land did hurricane Katrina destroy in a day?
Definition
35 square miles
Term
How do we control the Mississippi River?
Definition
levees
Term
What has been a result of the levees?
Definition
no longer overflow natural levees and deposit more sediment
Term
All of Louisiana was created by _____.
Definition
sediment
Term
All native rock in Louisiana is _____.
Definition
sedimentary
Term
When do geologists believe most Louisiana rock was formed?
Definition
Term
In geologic time, where is the land oldest in Louisiana?
Definition
Term
How old is the oldest exposed rock?
Definition
Term
Where is the oldest exposed rock located?
Definition
Term
How do earthquakes occur?
Definition
Term
Louisiana has _____ earthquakes.
Definition
Term
Where have earthquakes occurred in Louisiana?
Definition
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