UNIT  6  EARTH´S  INTERIOR

There is an enormous amount of energy inside the Erth. This energy can cause:

• volcanic eruptions
• earthquakes
• mountain ranges to emerge

VOLCANOES

A volcano is an opening, or rupture, in the surface or crust of the Earth or a planetary mass object, which allows hot lava, volcanic ash and gases to escape from the magma chamber below the surface.

     

all this information in the website below:

Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger.

 

 

Here you have an easy video explaining what a volcano is:

 

Listen to the music and see these amazing images:

 And now, let´s learn a bit more with pop music:

 If you want to see more videos, click on this website:

EARTHQUAKES

An earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time.

This diagram shows an earthquake along a fault. The focus of the earthquake is where the energy is released underground. The epicenter is the spot on the Earth’s surface directly above the focus.

 

information copied from:

 

 

Here you have some videos about earthquakes:

 

 

 

 

 

What is a tsunami?
A tsunami is a large ocean wave usually caused by an underwater earthquake or a volcanic explosion. Tsunamis are NOT tidal waves. Tidal waves are caused by the forces of the moon, sun, and planets upon the tides, as well as the wind as it moves over the water. With typical waves, water flows in circles, but with a tsunami, water flows straight. This is why tsunamis cause so much damage