continental drift
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
The theory that the Earth's continents have slowly moved across its surface over millions of years.
Usage notes
Largely absorbed into the broader modern theory of plate tectonics, which explains the mechanism behind the movement.
Test yourself
Which word fits the gap? "_____ explains why the coastlines of South America and Africa fit together so neatly."
Answer: continental drift
In your own words, what does "continental drift" mean?
The theory that the Earth's continents have slowly moved across its surface over millions of years.
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