TOEFL Reading

Academic passages with vocabulary, inference, detail, and rhetorical-purpose questions.

35:00

Question 1 of 25Use A-D, 1-4, Left/Right to choose, Enter to continue, and Ctrl+B

IELTS-style reading passage

Questions 1-2

Researchers often use volcanic ash layers as chronological markers. Because ash from a single eruption can spread across large areas, matching its chemical signature helps scientists compare deposits found in different locations.

Passage question 1 of 2

Why does the author mention volcanic ash in the passage?

A.To explain how scientists connect deposits from separate sitesB.To show that all eruptions have the same chemical signatureC.To argue that ash prevents accurate datingD.To describe the dangers of living near volcanoes

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