Question

When the crust between two parallel faults is raised up _________ are formed
A. fold mountain
B. rift valley
C. block mountain
D. continents

Answer 1

Hint: The upward block is termed the Horst. The sinking land is called the Graben. They are found in East Africa and the Black Forest as well.

Complete answer: Option A. They are formed when two tectonic plates push towards each other, causing debris to form these high structures. Its most famous example is the Himalayas. This is another kind of mountain than the answer and therefore cannot be the right option.
Option B. They are formed when the crust between two parallel faults subside along a plane, resulting in them being higher than the block between them. This clearly is not the answer, and is the flip part of the process mentioned in the question.
Option C is correct. They are made due to the endogenetic and compressive forces within the earth, and are the higher part on either side of a rift valley. Their fronts are often steep, with slopes in the back.
Option D. These huge land masses are counted conventionally as 7 in number, with Asia being the biggest and Australia being the smallest. Others are North America, South America, Europe, Antarctica and Africa. The other three geological phenomena occur on these hence this is an incorrect option.

Therefore, Option C is the correct answer.

Note: Some examples include the Tetons in Wyoming, Sierra Nevada in California and the Harz mountains in Germany. The oldest ranges of this kind in India are the Aravallis.