The topography of the ocean floors

Put the paragraphs in order.

1. AUse of the recently perfected method of echo sounding is rapidly enlarging our knowledge of submarine topography.
2. BA broad, well-defined ridge- the Mid-Atlantic ridge- runs north and south between Africa and the two Americas. Numerous other major irregularities diversify the Atlantic floor.
3. CHowever, the floor at the Atlantic is becoming fairly well known as a result of special surveys since 1920.
4. DClosely spaced soundings show that many parts of the oceanic floors are as rugged as mountainous regions of the continents.
5. EThe topography of the ocean floors is none too well known, since in great areas the available soundings are hundreds or even thousands of miles apart.
6. FDuring World War II great strides were made in mapping submarine surfaces, particularly in many parts of the vast pacific basin.

Reorder Paragraphs format (Pearson)

Pearson's name: Reorder Paragraph

How it is scored

• Partial credit applies: a partly correct response still scores.

Source: Pearson, PTE Academic & UKVI test format, Part 2: Reading, checked 9 October 2026.