what will happen if one of them erupts ?
if a super volcano 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 super volcanoes are huge volcanoes that can cause worldwide
damage and climate 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
super volcanoes that are ready to wake soon - Toba, on the Indonesian
island of Smatra, and Yellowstone