Biology Forums - Study Force

Explain how mountain ranges can be used as evidence to support continental drift. What will be an ideal response?

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Q. 2 -

What were the major lines of evidence for continental drift as presented by Wegener in the early 20th
  century? What will be an ideal response?

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Q. 3 - Continental crust is always thicker than oceanic crust. Indicate whether the statement is true or false.

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Q. 4 - An important means of continental accretion is plutonism. Indicate whether the statement is true or false.

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Q. 5 - Many terranes are composed of oceanic crust and originated as seamounts. Indicate whether the statement is true or false.

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Q. 6 - The Andes formed as result of oceanic-continental convergence. Indicate whether the statement is true or false.

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Q. 7 - Most orogenesis takes place on oceanic-oceanic convergent plate boundaries. Indicate whether the statement is true or false.

(Answer to question 1 )  

A mountain range forms under the same geological conditions along its length. This means that the
same or nearly the same rock types are found along the range's length in the same or nearly the same
sequence. The processes that form mountain ranges tend to create somewhat linear elevated features.
So a mountain range that has been split, even if it has been separated by an ocean, is fairly easy to
recognize.

(Answer to question 2 )  

The glaciations on the Gondwana continents could only have occurred if the continents were joined,
since the centers of the glaciers would have been in the ocean if they were not. Also, the continents,
such as South America and Africa, match like a jigsaw puzzle. Fossil plant and animals are separated
by oceans, when the organisms must have lived in adjacent regions when they were alive. Finally,
similar rock sequences and mountain ranges could be connected across oceans.

(Answer to question 3 )  T

(Answer to question 4 )  T

(Answer to question 5 )  T

(Answer to question 6 )  T

(Answer to question 7 )  F

Thank you for helping me throughout this difficult semester