← Ch 1 Vocab Test
5 Written Questions
5 Matching Questions
- Continental drift theory
- Wisconsian Glaciation
- Patch reefs
- a large supercontinent that existed 250 million years ago
- b The idea that all of the continents were once a giant landmass called Pangaea. Over time the continents drifted apart, they are still drifting today.
- c Isolated reefs
- d 3 million years ago, where ice coverage was minimal and many parts of the east coast were submerged.
- e 100,000 years agoafter the Sangamon. This glaciation caused the water level to drop about 300-500 feet lower than it is today.
5 Multiple Choice Questions
- 1.8 to 10,000 years ago characterized by numerous "Ice Ages" and the period largely responsible for shaping the Florida Keys as we know them today
- large complex of reefs that began to grow on the continental shelf about 98 million years ago
- giant lagoon that existed during the Jurassic period when the Straits of Florida did not exist. Sediment that accumulated in the Basin was deposited in a relatively shallow marine environment that had limited exchange of water with the surrounding ocean.
- A German scientist who proposed the theory of continental drift
- The last warm period of the Ice Age period (The Pleistocene) the sea level was about 25 feet higher than it is today. During this period, New England's rocky shores developed under large ice sheets. Reefs flourished off the southern tip of Florida on the broad, flooded continental shelf.
5 True/False Questions
Miami oolite → when oolitic sands were exposed to air and rain, the oolitic sands cemented together into a rock found from Miami to the lower Keys
Miocene Period → Humans - Current Period
Biogenic sediments → derived through direct precipitation from seawater.
Cretaceous Period → 100 million years ago portions of the Proto-South Florida Basin dropped by a process called downfaulting.
continental plates → Thick plates that form the continents; less dense than oceanic plates.