Meaning & use
tectonic plate
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Meaning
nouncountabletechnical
One of the large, rigid pieces of the Earth's outer shell that slowly move over the softer layer below.
Grammar: Countable: you can say 'a tectonic plate', 'seven major tectonic plates', etc.
Patterns
- a tectonic plate
- tectonic plates
- the movement of tectonic plates
The Pacific tectonic plate is moving northwest, which causes many earthquakes in Japan.
Scientists study how tectonic plates interact to understand mountain building.
The boundary between two tectonic plates is often a zone of volcanic activity.
Word forms
| plural | tectonic plates |
|---|
Common combinations
- tectonic plate boundary
- The Himalayan mountains were formed at a tectonic plate boundary.
- movement of tectonic plates
- The slow movement of tectonic plates can cause massive earthquakes.
- major tectonic plate
- The Eurasian plate is one of the major tectonic plates.
- tectonic plate shift
- A sudden tectonic plate shift triggered a tsunami.
Synonyms and how they differ
- plate
- Short form often used in geology when the context is clear, e.g., 'the Pacific plate'.
- lithospheric plate
- More technical term that includes the crust and uppermost mantle.
Word family
- tectonic adjective
- Relating to the structure of the Earth's crust or to large-scale movements.
- plate tectonics noun
- The scientific theory explaining the movement of tectonic plates.
Commonly confused: tectonic plate or continental plate?
tectonic plate vs continental plate
A type of tectonic plate that includes continents, but not all tectonic plates are continental (some are oceanic).
Practice
Which sentence uses 'tectonic plate' correctly?
Choose one answer.
Option B correctly describes the movement of tectonic plates causing earthquakes. Option An is wrong because a tectonic plate is not a rock type; it is a large section of the Earth's crust. Option C is wrong because plates do move, though very slowly. Option D is wrong because a tectonic plate is not a tool.
Make it your own
Write a sentence using “tectonic plate”, then check it and compare it with the examples above.