by Zander Grandpre
Volcanoes are caused when magma rises which then can cause bubbles of gas. The gas bubbles can cause pressure and eventually will explode.
Most volcanoes occur on the edge of plates.
Volcano eruptions can be predicted if Volcanologists have a good understanding about the volcano's past and activity. If Volcanologist can actively monitor the volcano, they can predict the year it will erupt.
Leaving shelter: If you need to leave the house, wear long sleeved shirts, pants, eye protection (goggles/eye glasses) and put a damp cloth over your mouth/nose.
If outdoors, seek shelter. If you see debris falling from the sky (rocks), get on the ground, put yourself in a ball and protect your head. If you're near a stream or river, be cautious of rising waters. If you are burned, seek immediate help. If you do not burns can be fatal.
Preparing in your own home!
Always discuss plan with family members, have small practice drills to get familiar with where you need to go, and what you need to do.
If you and your family are separated go to the emergency meeting place.
1985 Nevado del Ruiz Volcano
The main reason why the volcano erupted is because the tectonic plate slid underneath one another. The rock beneath it broke and turned into magma due to the hot temperatures, extra magma caused a pressure buildup inside the volcano and eventually the volcano erupted to get rid of that pressure.
The mass tragedy could have been avoided if people took the Volcanologists warnings seriously.
The volcano covers more than 200 square kilometers.