Energy is never lost; it only changes its form
In short: Understand the fundamental law of physics that governs every movement and machine: conservation of energy. This video explains how energy moves between stores, why some output is wasted, and how to calculate these transfers accurately.
The principle of conservation of energy dictates that energy cannot be created or destroyed; it can only be transferred from one store to another. In any system, the total energy input must equal the total energy output.
The video distinguishes between useful energy—the primary purpose of a device—and wasted energy. It uses practical examples like comparing LED and filament light bulbs to illustrate efficiency and provides worked examples on calculating missing values in transfer diagrams.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: KS3 Physics - Conservation of Energy
To cite this card, link to https://intellectplus.co.uk/app/science-ks3-physics-conservation-of-energy.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
Related
More in Physics · More in Science · Latest · A–Z · All topics
