Question

Answer in brief. a) What are rocks made up of? b) Name the different types of rocks found on earth. c) What typeof rock is formed by binding together and hardening of layers of sediments? d) Which sedimentary rock under extreme heat and pressure transforms into marble?Name two natural resources that even today fulfill most of our energy demands.

Answer 1

Rocks are mainly formed from fragments of igneous rock or organic material. They are classified as igneous, sedimentary, and metamorphic. Sedimentary rocks are formed by layers of sediments, while Metamorphic rocks are altered versions of other rock types under extreme conditions. The two primary sources of energy are coal and oil.

Step-by-step explanation:

Rocks are made up of fragments from igneous rock or shells of dead organisms that have been deposited over time by wind or water.

Types of rocks found on Earth can be broadly classified into three categories: Igneous, Sedimentary, and Metamorphic rocks. Sedimentary rocks are formed by hardening and binding together of layers of sediments, while Metamorphic rocks are produced when igneous or sedimentary rocks alter physically or chemically under extreme temperature or pressure. For example, the sedimentary rock limestone, under extreme heat and pressure, transforms into marble, a metamorphic rock.

The two natural resources that fulfill most of our energy demands are fossil fuels, mainly coal and oil. These are also formed from decaying plants and animals that have been trapped in layers of sediments and undergone geological processes.

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