Advertisements
Advertisements
प्रश्न
How are extrusive and intrusive rocks formed?
संक्षेप में उत्तर
Advertisements
उत्तर
When the molten lava comes on the earth’s surface, it rapidly cools down and becomes solid. Rocks formed in this way on the crust are extrusive igneous rocks.
Sometimes the molten magma cools down deep inside the earth’s crust. Solid rocks so formed are actually intrusive igneous rocks.
shaalaa.com
Rocks and Minerals
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
What is a rock?
Name three types of rocks.
What are metamorphic rocks?
Tick the correct answer
Gold, petroleum and coal are examples of
Match the following
| A | B | ||
| (i) | Core | (a) | Earth’s surface |
| (ii) | Minerals | (b) | Used for roads and buildings |
| (iii) | Rocks | (c) | Made of silicon and alumina |
| (iv) | Clay | (d) | Has definite chemical composition |
| (v) | Sial | (e) | Innermost layer |
| (f) | Changes into slate | ||
| (g) | Process of transformation of the rock | ||
What are fossils?
What happens when igneous and sedimentary rocks go under great heat and pressure?
How are minerals useful for mankind?
What is the mineral most commonly used in the following object?
Which one of the following is not a single element mineral?
