Meaning & use
the convection zone
Last updated
Meaning
nouncountabletechnicalphysics
A layer inside a star or planet where hot material rises and cooler material sinks, carrying heat by movement.
Grammar: Countable: you can say 'a convection zone' or 'the convection zone'. It is often used with 'the' for a specific star.
Patterns
- the convection zone of a star
- inside the convection zone
- a deep/shallow convection zone
In the Sun, the convection zone lies between the radiative zone and the visible surface.
Heat travels through the convection zone by the rising and falling of plasma.
Astronomers study the convection zone to understand why the Sun's surface is grainy.
Word forms
| plural | convection zones |
|---|
Common combinations
- the Sun's convection zone
- The Sun's convection zone extends outward to the photosphere.
- convection zone of a star
- The convection zone of a star can generate a strong magnetic field.
- convective zone
- Some textbooks use 'convective zone' as a synonym for convection zone.
- radiative zone
- Below the convection zone is the radiative zone, where heat moves as radiation.
Synonyms and how they differ
- convective zone
- This is a common alternative term with the same meaning, especially in physics textbooks.
Word family
- convection noun
- The process of heat transfer by the movement of a fluid.
- convective adjective
- Relating to or caused by convection.
Commonly confused: the convection zone or radiation zone?
the convection zone vs radiation zone
The radiation zone (or radiative zone) is a different layer where heat moves as electromagnetic radiation, not by moving material.
Practice
What happens in the convection zone of a star?
Choose one answer.
The convection zone is defined by the physical movement of hot and cool material, which transfers heat. Option A describes the radiative zone, and option C describes the core.
Make it your own
Write a sentence using “the convection zone”, then check it and compare it with the examples above.