The molten or semi-molten natural materials found under the Earth's surface from which the igneous rocks are formed are called magma. Magma is formed when temperatures within the mantle are very hot and when the pressure in places within those layers decreases. The magma rises and overflows when a volcano erupts.

Minerals are homogenous, naturally occurring substances that have a definite chemical composition and internal structure. Minerals are not evenly distributed across the world. Minerals are found in ores and exhibit different physical and chemical properties such as colour, hardness, lustre and solubility.

Lava is molten material ejected from a volcanic eruption in liquid form. The temperature of freshly ejected lava may range from 600 to 1200 degree celsius. Once it emerges on the Earth's surface, it flows and slowly cools down, consuming objects along its path.

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LANDMARK INTEGRATED SOCIAL SCIENCES>Geography>Chapter 12 - Interior of the Earth>EXERCISES

Indira Subramanian and Ramesh Mathur Solutions for Exercise 5: EXERCISES

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Indira Subramanian Social Science Solutions for Exercise - Indira Subramanian and Ramesh Mathur Solutions for Exercise 5: EXERCISES

Attempt the practice questions from Exercise 5: EXERCISES with hints and solutions to strengthen your understanding. LANDMARK INTEGRATED SOCIAL SCIENCES solutions are prepared by Experienced Embibe Experts.