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Give one difference between Extrusive igneous and Intrusive igneous rocks. - Geography

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प्रश्न

Give one difference between Extrusive igneous and Intrusive igneous rocks.

Give two differences between Extrusive Igneous and Intrusive Igneous rocks.

फरक स्पष्ट करा
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उत्तर

S. No. Extrusive Igneous rocks Intrusive Igneous rocks
1. They are created when molten magma cools on the surface of the earth. When magma solidifies inside the earth's crust, they are created.
2. These rocks have fine grains, are crystalline, and are smooth. These are hard rocks with big crystals and a gritty feel.
3. Example: Basalt Example: Granite
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Notes

Students should refer to the answer according to their questions. 

Rock and it's Types
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Rocks - EXERCISES [पृष्ठ ६४]

APPEARS IN

मॉर्निंग स्टार Total Geography [English] Class 9 ICSE
पाठ 6 Rocks
EXERCISES | Q II. 4. | पृष्ठ ६४

संबंधित प्रश्‍न

Rocks and minerals play a very important role in our lives.
What problems would you face in their absence?


Fill in the blank
A category of rock which is formed by the alteration of the parent rock due to heat and pressure is called: ______________.


Write True or False. Rewrite the false statement correctly :
Minerals are organic substances.


Write True or False. Rewrite the false statement correctly :
Rocks are used in construction industries.


What is the difference between the inner and the outer core?


Explain the structure of the earth’s interior?


Describe the process that leads to exfoliation.


State two points of distinction between rocks and minerals.


How are sedimentary rocks classified on the basis of their formation?


Sedimentary rocks are also called stratified rocks. Why?


Give one term for the following statement:

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


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


Give reasons for the following

Extrusive rocks generally have small crystals.


Fill in the blank below:
______are intrusions of igneous rock that are vertical in shape


Match the following:

A. Basalt 1. Anthracite
B. Limestone 2. Extrusive igneous
C. Coal 3. Metamorphic rock
D. Gneiss 4. Sedimentary rock

______ into slate caused by thermal metamorphism.


The oldest sedimentary rocks of the world have been identified in ______.


______ are chemical substances which exist in nature.


Explain the different types of sedimentary rocks.


Statement (1): Sedimentary rocks consist of many layers. 

Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time. 


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