Rock Cycle: Steps and Diagram

Rock cycle is defined as the changes involved in the different types of rocks, however the rock cycle illustrates and explains how the three types of rocks are related to each other, and how processes change from one type of rock to another over time. The rock cycle takes place due to two forces: …

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Weathering: Definition, Types and Examples of Weathering

What is weathering? Weathering is defined as a process by which the rocks on the surface of the earth are broken down into smaller pieces due to running water, ice, snow or frost, variation of temperature and pressure or due to chemical (dissolution) action on the materials. After rock is broken down into smaller …

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Metamorphic Rocks: Definition, Formation, Types, Examples and Characteristics of Metamorphic Rocks

What are metamorphic rocks? Metamorphic rocks are rocks whose structure and appearance have been affected or changed by greater heat, pressure and chemical processes, usually while buried deep below the Earth’s surface or where tectonic plates meet. Exposure to these extreme conditions has altered the mineralogy, texture, and chemical composition of these …

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Continental Drift Theory (the Jigsaw Theory), Evidences and Causes of Continental Drift

Continental driftis defined as the movement of the Earth’scontinentsrelative to each other, appearing to “drift” across the ocean bed. Continental drift theory was initially proposed byAbraham Orteliusin 1596 and was later developed fully by a geophysicist and meteorologist,Alfred Wegenerin 1912. This theory explains that the earths continent move gradually over the surface …

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