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Fast Process: Volcano and Earthquake

Grade 2
Aug 20, 2022

Key Concepts

  • Earthquake and Volcano
  • Fast process and slow process
  • Causes of Volcano and Earthquake

History of Planet Earth 

Our planet is not a spring chicken.  

There are billions of years in the Earth’s history. In that period, several things changed. 

Some of those changes occurred slowly and gradually over a very long period of time, making them difficult for individuals to notice. On the other hand, some changes happened quite quickly. 

 Fast and slow changes occur during Earth`s event 

The things that constantly move all around us, such as water, wind, and ice, slowly shape the Earth’s surface. 


Volcanoes, landslides, and earthquakes are caused by activity just beneath the surface of the Earth’s crust, which causes quick changes in the shape of the land. 

Ice, water, and wind above the surface of Earth 


Fast process and slow process 

Day and night are examples of cycles that happen on Earth.  

Other occurrences, like a volcanic eruption, have a beginning and an end.  

Some events, like earthquakes, happen very rapidly; others, like the Grand Canyon’s formation, happen very slowly over a period of time that is much longer than what is visible to the human eye. 

Slow process formation of Grand Canyon



Large quantities of rock are moved beneath the Earth’s surface during an earthquake, which causes the ground to shake.  

There are frequent earthquakes all around the planet. earthquakes result in significant losses of life and property. 


A volcano is a crack in the crust of the Earth. Hot gases and melted rock from deep under the Earth’s crust rise to the surface when a volcano erupts.  

Eruptions mean spewing out melted rocks, ash, and gases. 

This substance may gently leak out of a ground fissure or fracture, or it may explode violently into the air. Volcanic eruptions might cause a lot of damage. However, they also produce fresh terrain. 

Cracks in the crust of Earth due to a volcano 

Both volcanoes and earthquakes are fast processes of Earth’s events. 

Causes of volcano and Earthquake 

Very slowly moving parts known as tectonic plates make up the Earth’s surface.  

The outermost layer of the Earth is made up of these plates, which fit together like puzzle pieces.  

Volcanic eruptions and earthquakes can result from this layer’s movement. (Movement of tectonic plates) 

Tectonic plates in the form of puzzle 

The surface of the Earth`s layer is broken up into large plates. 

These crust pieces are moving, pushing up against one another, sliding by one another, and pulling apart. 

These changes are highly noticeable as they take place. In reality, we must take caution, predict them, and take precautions both before and after they happen. 

Can earthquakes trigger volcanic eruptions? 

The heat and energy that the Earth’s core releases cause both earthquakes and volcanoes. Volcanic eruptions are brought on by earthquakes when tectonic plates move forcefully. Similar to this, the movement of magma (hot liquid rock deep inside the Earth) within volcanoes can cause earthquakes. 

Eruptions mean spewing out melted rocks, ash, and gases. 

As a result, one way that earthquakes and volcanoes are connected is through a cyclical relationship, in which earthquakes trigger volcanic eruptions, and lava movement triggers earthquakes. 

Landslides, earthquakes, and volcanoes don’t occur frequently. We would be in severe danger if they were!  

Movement of tectonic plates 

The plates move very slowly yet very powerfully most of the time.  

One of the powerful factors that alter the position and structure of continents and oceans is plate movement; these powerful changes occur gradually over millions of years and are invisible to the human eye. 

While some of the world’s biggest events take place naturally, others are caused by people. Humans frequently deliberately speed up, slow down, or otherwise control natural processes on Earth in order to obtain our desired goals, which are typically natural resources like water or oil.  

Cutting down trees and constructing new homes, bridges, offices, and movie theatres can hasten natural events that would have otherwise taken considerably longer if humans had not been involved. 


  • The history of the planet Earth from its creation to the present is the subject of Earth history. 
  • Changes on Earth occur in two ways: rapid change and slow change. 
  • Some changes on Earth are due to slow processes, such as erosion and weathering. 
  • Some changes are due to rapid processes, such as landslides, volcanic eruptions, and earthquakes. 
  • Large quantities of rock are moved beneath the Earth’s surface during an earthquake, which causes the ground to shake. 
  • A volcano is a crack in the crust of the Earth. This is also a fast process of Earth. 
  • The outermost layer of the Earth is made up of tectonic plates, which fit together like puzzle pieces.  
  • When the plates move forcefully, volcanoes and earthquakes occur. 
Volcano and Earthquake


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