Listening · Academic Talk
Volcanoes and Magma
Listening · Academic Talk
Listening Test
Today's lecture: geology
This task is designed to measure your ability to understand a short academic lecture on a topic taught in a university class.
In this exercise, you'll listen to a short academic talk and then answer multiple-choice questions about what you heard.
- Each question is worth 1 point. There are 4 questions about this talk.
- The talk plays only once — listen carefully.
- After the talk, you'll have 30 seconds per question. The exercise auto-advances when the timer hits zero.
- You can replay the audio and review the transcript only on the result screen.
Volcanoes and Magma
Listen to the talk and answer the questions
Listen to a talk in a geology class
Show transcript
When most people picture a volcano, they imagine the eruption, but the real story starts far below the surface. Deep underground, intense heat melts rock into a thick liquid called magma. Because magma is lighter than the solid rock around it, it slowly rises, collecting in chambers and building up tremendous pressure. When that pressure finds a weak point in the crust, the magma forces its way upward and bursts out as lava, ash, and gas. Now, an interesting consequence: although eruptions are dangerous, the ash they spread is rich in minerals, and over time it breaks down into remarkably fertile soil. That's why, despite the risk, farming communities often settle on volcanic slopes. So a volcano is both a threat and a gift, capable of destroying a landscape and, in the long run, of enriching it.
Question 1
Where does the story of a volcano really begin, according to the professor?
Show answer
Answer: Far below the surface
Question 2
Why does magma rise toward the surface?
Show answer
Answer: It is lighter than surrounding rock
Question 3
What does the professor say about volcanic ash?
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Answer: It breaks down into fertile soil
Question 4
How does the professor describe a volcano overall?
Show answer
Answer: Both a threat and a gift
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