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In Course: GCSE Physics (AQA): Paper 1

AQA GCSE Physics: Conservation and Efficiency

Covers the principle of conservation of energy, closed systems, energy dissipation (wasted energy), reducing unwanted energy transfers, thermal conductivity, and the calculation of energy efficiency.

A dramatic, wide-angle photograph of a powerful, vintage steam locomotive thundering through a misty, autumnal landscape. Thick plumes of steam and smoke billow from its chimney and vents, visibly illustrating energy conversion and dissipation against the backdrop of its forward motion.

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Deck Contents

30 Cards
Lesson#1
In this deck, we'll explore one of the most fundamental rules in all of physics: the conservation of energy. You'll learn what this principle means, how it applies to closed systems, and why no energy transfer is ever perfectly efficient. We'll also look at ways to reduce wasted energy and how to calculate the efficiency of a device.
Lesson#2
The principle of conservation of energy is a simple but powerful idea. It states that energy can be transferred usefully, stored, or dissipated, but it can never be created or destroyed. The total amount of energy in the universe is constant; it just changes form.
Quiz#3
What is the principle that states energy cannot be created or destroyed?

Conservation of energy

Lesson#4
To understand energy conservation, physicists often think about 'closed systems'. A closed system is an idealized concept of a system that doesn't interact with its surroundings. No energy or matter can get in or out. For example, the entire universe can be considered a closed system.
Quiz#5
In physics, what is the term for a system where no energy can enter or leave?

A closed system

Quiz#6
In a closed system, what always happens to the total amount of energy?

It stays constant

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