Quiz · When a Volcano Erupts

Question 1What is the main idea of this talk about volcanoes?

How scientists build instruments near volcanoes Why farmers choose to live near volcanoes How mountains slowly turn into volcanoes What happens when a volcano erupts

Question 2According to the talk, what exactly is magma?

Ash clouds that rise above a crater Hot melted rock deep under the ground Dark hard rock formed from cooled lava Pressure building up inside a mountain

Question 3Why do scientists measure small earthquakes near volcanoes?

To find the best places to grow crops To help lava cool down more quickly To warn people before an eruption begins To measure how deep the oceans are