Supervolcanoes
What will happen if one of them erupts?
If a supervolcanoes erupts,
-the lava will wipe out everything for 100 km around the volcano.
-50 cm of ash will fall in an hour.
-the dust and gas will block out the sun for a long time.
-the temperature will drop.
-plants and animals will die.
-many people won't survive.
calderas or 'supervolcanoes' are huge volcanoes that can cause worldwide damage
and cilmate change if they erupt. The good news is this only happens every 100,000 years.
The bad news is there are at least two sleeping supervolcanoes that are ready to wake up soon - Toba, on the Indonesian island of Sumatra, and yellowstone in the USA.