Earthquakes and Volcanoes 03

This third KS3 Geography quiz takes a final look at earthquakes and volcanoes. Volcanoes come in many different shapes and sizes. Some of them are steep-sided and conical. Others have a flatter and wider profile. It all depends on the type of lava that they erupt. Volcanoes that erupt runny lavas form the flatter and wider type. These are called shield volcanoes.

Good examples of shield volcanoes are the ones that make up the Hawaiian Islands in the Pacific Ocean. Volcanoes with very thick lava form the type with the steeper sides. These also tend to have explosive eruptions that send pyroclastic flows racing down from the top. These are very destructive. A good example of this type is Mount St. Helens in the USA.