(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Geography

Why are Sedimentary rocks called the Secondary rocks?

How are sedimentary rocks classified?

State the properties of metamorphic rocks.

Give one term for the following statement:

Formed when mud layers compacted under great pressure composing 80% of this rock.

Give one term for the following statement:

It has a definite chemical composition with its own chemical and physical properties.

Give one term for the following statement:

Igneous rocks of deep seated origin.

Give one term for the following statement:

Sheet like body of igneous rock.

Give one term for the following statement:

Rounded or sub-rounded fragments, usually water-born cobbles, pebble and gravel, cemented together by a matrix of calcium carbonate, silica, etc.

Give one term for the following statement:

Formed by evaporation in saline lakes.

Give one term for the following statement:

Fine grained metamorphic rock, generally produced by the low grade metamorphism of shale.

Give one term for the following statement:

Type of metamorphism in which changes are caused due to high pressure.

Why are the Igneous Rocks called Primary Rocks?

Why fossils are preserved in Sedimentary and not in Igneous rocks?

How is Plutonic rock formed?

Give an example of a Plutonic rock.

Give reasons for the following

Extrusive rocks generally have small crystals.

Give reasons for the following

Silicates are the most common rock forming minerals.

Give reasons for the following

Rocks are of great economic significance.

Give reasons for the following

Man’s habitat is the biosphere and not the lithosphere in the true sense.

Distinguish between Intrusive and Extrusive Rocks