Minerals and Rocks — Geography STD 11 Humanities — Question

Answer the following question in about 30 words.
How does wind perform its task in desert areas? Is it the only agent responsible for the erosional features in the deserts?

Answer the following question in about 30 words.
Why does the amount of water vapour decreases rapidly with altitude?

Answer the following questions:
Discuss briefly the importance of animals to human kind.

Answer the following question in about 30 words:
How are the convectional currents in the mantle initiated and maintained?

Answer the following question in about 30 words.
Explain relative humidity.

Answer the following question in about 150 words.
What are metamorphic rocks? Describe the types of metamorphic rock and how are they formed?

Answer the following question in about 30 words.
What are the geotrophic winds?

Answer the following question in about 150 words:
What are the effects of propagation of earthquake waves on the rock mass through which they travel?

Answer the following question about 30 words:
What is the basic difference in the arguments related to the origin of the earth given by:

1. Kant and Laplace.
2. Chamberlain and Moulton.

Answer the following question in about 30 words.
How does the unequal distribution of heat over the planet earth in space and time cause variations in weather and climate?