PlumbingIQ
Sign InGet Started
PlumbingIQ

Learning

DashboardFlashcardsMy Progress

Testing & Mocks

Mock Exams

Account

Upgrade to Pro

⭐ Upgrade to Pro - £19

Unlock all lessons and mock exams to pass Level 2 + Level 3 theory exams.

Upgrade now
Lesson 11 of 21

Temperature and Heat

Read through the material below, then test your understanding.

Module Lessons

Scientific Principles

Lesson Overview

Temperature measures the intensity of heat within a substance, whereas heat is the actual thermal energy transferred between bodies due to a temperature difference. Understanding temperature scales and measuring instruments ensures heating and hot water systems are commissioned and balanced safely and efficiently.

Learning Objectives

Distinguish between heat, temperature, and power, including their standard units of measurement.

Convert values between the Celsius and Kelvin temperature scales and explain absolute zero.

Identify common temperature measuring instruments used in the plumbing industry and their applications.

Unlock the full lesson & knowledge check

Get lifetime access to every Level 2 & 3 lesson, 3500+ total questions, and timed City & Guilds mock exams.

Get Pro Access (£19)

Already have Pro? Sign in

PlumbingIQ

Interactive City & Guilds Level 2 and Level 3 plumbing lessons, flashcards and mock exams, built for UK students and professionals.

© 2026 PlumbingIQ. All rights reserved.