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Listen to an Academic Talk Test #023
Listen to an Academic Talk
1. What is the main topic of the lecture?
A) The formation of the Pacific Ocean
B) A specific region of high geological activity
C) Methods for predicting earthquakes and volcanoes
D) The structure of different tectonic plates
2. According to the professor, what percentage of the world''s earthquakes occur in the Ring of Fire?
A) About 40 percent
B) About 75 percent
C) About 90 percent
D) About 100 percent
3. What can be inferred about countries like Japan and Chile?
A) They have a very low risk of natural disasters.
B) They are located far from any tectonic plate boundaries.
C) They were the first to study tectonic plates.
D) They need to have systems for disaster preparedness.
4. Why does the professor mention the Pacific and North American plates?
A) To give examples of plates in the Ring of Fire
B) To suggest they are the only plates on Earth
C) To argue that they are moving apart
D) To question a theory about their size
Professor: We've been discussing the Earth's structure, so today let's focus on one of its most dramatic consequences: the Pacific Ring of Fire. This isn't a literal ring of fire, of course. It's a 40,000-kilometer path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes.
This intense geological activity happens because the Ring of Fire is where several tectonic plates meet and interact. For example, the massive Pacific Plate is colliding with and sliding under other plates, like the North American and Eurasian plates.
The sheer scale of this is hard to grasp. About 90 percent of the world's earthquakes and 75 percent of all active volcanoes on Earth occur along this path. Consequently, understanding the dynamics of the Ring of Fire is absolutely critical for forecasting natural disasters and protecting the millions of people who live in countries along its edge, like Japan and Chile.
This intense geological activity happens because the Ring of Fire is where several tectonic plates meet and interact. For example, the massive Pacific Plate is colliding with and sliding under other plates, like the North American and Eurasian plates.
The sheer scale of this is hard to grasp. About 90 percent of the world's earthquakes and 75 percent of all active volcanoes on Earth occur along this path. Consequently, understanding the dynamics of the Ring of Fire is absolutely critical for forecasting natural disasters and protecting the millions of people who live in countries along its edge, like Japan and Chile.
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