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Running head: QUESTIONS AND ANSWERS 1
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QUESTIONS AND ANSWERS 2
POWERPOINT1: CONTINENTAL DRIFT
1. Outline the various evidences which support the continental drift theory.
a. Fossils such as the fossil ferns, mesosaurus reptiles
b. Fits of the continents
c. Rocks which have the same type and age on the African and S. American shores
d. Geologic structures on North American mountains that match the caledonides.
e. Glacial striations and other glacial deposits on southern continents and India
2. Define the plate tectonic theory
The plate tectonic theory is the theory proposing that the lithosphere is divided into plates
that interact with one another at their boundaries producing tectonic activity.
3. Define seafloor spreading in plate tectonic theory.
Sea Floor Spreading is the process where ocean crust is created at mid-ocean ridges and
spreads laterally
4. Outline the three specific features of the convergent boundary in plate tectonics theory.
a. Mid Ocean Ridges
Example: Mid Atlantic Ridge, At Ocean
b. Rift Valleys on continents
Example: East African Rift Valley
c. Mid-Ocean Ridges in ocean
Example: Mid Atlantic Ridge
5. Clearly state and explain any four geologic principles.
a. Relative Age
Age expressed relative to the age of other objects or events; no time units.
EX: This rock layer is older than another. Or you are younger than your grandfather.
b. Superposition
Youngest rock layer is on top and oldest on the bottom.
c. Original Horizontality
Sedimentary rock layers are originally deposited as horizontal layers.
d. Faunal Succession

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Running head: QUESTIONS AND ANSWERS Your name Instructor’s name Course Date of submission 1 QUESTIONS AND ANSWERS 2 POWERPOINT1: CONTINENTAL DRIFT 1. Outline the various evidences which support the continental drift theory. a. Fossils such as the fossil ferns, mesosaurus reptiles b. Fits of the continents c. Rocks which have the same type and age on the African and S. American shores d. Geologic structures on North American mountains that match the caledonides. e. Glacial striations and other glacial deposits on southern continents and India 2. Define the plate tectonic theory The plate tectonic theory is the theory proposing that the lithosphere is divided into plates that interact with one another at their boundaries producing tectonic activity. 3. Define seafloor spreading in plate tectonic theory. Sea Floor Spreading is the process where ocean crust is created at mid-ocean ridges and spreads laterally 4. Outline the three specific features of the convergent boundary in plate tectonics theory. a. Mid Ocean Ridges Example: Mid Atlantic Ridge, At Ocean b. Rift Valleys on continents Example: East African Rift Valley c. Mid-Ocean Ridges in ocean Example: Mid Atlantic Ridge 5. Clearly state and explain any four geologic principles. a. Relative Age Age expressed relative to the age of other objects or events; no time units. EX: This rock layer is older than another. Or you are younger than your grandfather. b. Superposition Youngest rock layer is on top and oldest on the ...
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