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What do you understand by tectonic plates?

A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. Continental crust is composed of granitic rocks which are made up of relatively lightweight minerals such as quartz and feldspar.

Why it is important to understand plate tectonics?

Tectonic Plate Map. The movement of Earth’s tectonic plates shape the planet’s surface. Plate boundaries are important because they are often associated with earthquakes and volcanoes. When Earth’s tectonic plates grind past one another, enormous amounts of energy can be released in the form of earthquakes.

What are the effects of plate tectonics?

Plate motions cause mountains to rise where plates push together, or converge, and continents to fracture and oceans to form where plates pull apart, or diverge. The continents are embedded in the plates and drift passively with them, which over millions of years results in significant changes in Earth’s geography.

Do we need plate tectonics?

This process of plate tectonics is one of Earth’s defining characteristics. That Earth has a moving, morphing outer crust may be the main reason why Earth is so vibrant, and why no other planet can match its abundance. “Understanding plate tectonics is a major key to understanding our own planet and its habitability.

How many plates are there?

seven

What if there were no plate tectonics?

If all plate motion stopped, Earth would be a very different place. The agent responsible for most mountains as well as volcanoes is plate tectonics, so much of the activity that pushes up new mountain ranges and creates new land from volcanic explosions would be no more.

What natural disasters are caused by plate tectonics?

Events such as earthquakes, volcanoes and tsunamis all result because of plate tectonics.

How will you justify plate tectonics?

Answer: the plate or movement of plate boundaries can also benefits human because many of the earths natural resources of energy,minerals and soil are concentrated near past or present plate boundaries. The utilization of these readily available resources have sustained the human civilization,both now and in the past.

Are tectonic plates floating?

The tectonic plates do not slowly drift over time because they are floating on a layer of liquid rock. They drift because they are sitting on a layer of solid rock (the upper mantle or “asthenosphere”) that is weak and ductile enough that it can flow very slowly under heat convection, somewhat like a liquid.

What is the border between two tectonic plates called?

boundary

What happens when two tectonic plates meet?

If two tectonic plates collide, they form a convergent plate boundary. Usually, one of the converging plates will move beneath the other, a process known as subduction. The new magma (molten rock) rises and may erupt violently to form volcanoes, often building arcs of islands along the convergent boundary.

What will plate tectonics look like in the future?

It Might Look Like This. These pieces, the tectonic plates, move around the planet at speeds of a few centimetres per year. Every so often they come together and combine into a supercontinent, which remains for a few hundred million years before breaking up.