---
title: "Heat Transfer — AP Physics 2 Definition & Exam Guide"
description: "Heat transfer is the movement of thermal energy from hot to cold via conduction, convection, or radiation. Core to AP Physics 2 thermodynamics and the first law."
canonical: "https://fiveable.me/ap-physics-2-revised/key-terms/heat-transfer"
type: "key-term"
subject: "AP Physics 2"
---

# Heat Transfer — AP Physics 2 Definition & Exam Guide

## Definition

Heat transfer refers to how thermal energy moves from one object or substance to another due to differences in temperature. It can occur through conduction, convection, or radiation.

## Related Study Guides

- [2022 AP Physics 2 Exam Guide](/ap-physics-2-revised/unit-nDdATQV5zgfkYSAz/2022-ap-physics-2-exam-guide/study-guide/7iv6rlD6kfByNtayJzRg)

## Review

### Related Terms

- [Conduction](/ap-physics-2-revised/key-terms/conduction): Conduction is the transfer of heat through direct contact between particles or objects.
- [Convection](/ap-physics-2-revised/key-terms/convection): Convection is the transfer of heat through the movement of fluids (liquids or gases).
- [Radiation](/ap-physics-2-revised/key-terms/radiation): Radiation is the transfer of heat through electromagnetic waves without requiring a medium for propagation.