Conduction

Definition

Conduction is the transfer of heat through direct contact between atoms or molecules within a substance. It occurs as particles vibrate and pass kinetic energy to neighboring particles.

5 Must Know Facts For Your Next Test

1. Conduction plays a minor role in the energy transfer processes within the Sun's interior.
2. In the Sun, conduction is less efficient compared to radiation and convection due to the high temperature and density.
3. The dense core of the Sun limits conduction as an effective means of energy transport.
4. Conduction requires a medium; it cannot occur in a vacuum.
5. The process of conduction in stellar interiors like the Sun is governed by thermal conductivity properties of plasma.

Review Questions

• Why is conduction considered a minor mode of energy transfer in the Sun's interior?
• How does temperature and density affect conduction efficiency in stars?
• What are the primary modes of energy transfer in the Sun if not conduction?

Related terms

Radiation: The transfer of energy through electromagnetic waves, which is a dominant mode of heat transfer in the solar interior.

Convection: The movement of heat by fluid motion, significantly contributing to energy transport in certain layers of stars.

Thermal Conductivity: A material’s ability to conduct heat, influencing how effectively conduction can occur.