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AQA GCSE Physics: Chapter 1: 1.1- Energy stores and Transfers £5.26   Add to cart
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AQA GCSE Physics: Chapter 1: 1.1- Energy stores and Transfers
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Notes taken on section 1.1: Chapter 1 of AQA GCSE Physics on everything to do with energy transfers and stores; including the different types of energy stores and their descriptions, energy transfers, and the Conservation of Energy Principle.

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  • July 22, 2024
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  • 2023/2024
  • Lecture notes
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  • Energy stores and transfers

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Chapter 1: Energy Transfers
1.1: Energy Stores and Transfers

Energy Stores

· Energy store: Where the energy transferred to that object is stored (like a “bucket” of energy that it
can be “poured into or taken out of”).

· Different types of energy store and objects with energy in these stores:

-Kinetic: Something that is moving has energy in its kinetic energy store.

-Thermal: The hotter an object is the more energy it has in its thermal energy store. This can be any
object (thermal energy stores can also be called “internal energy stores”).

-Chemical: Anything that can release energy by a chemical reaction has a chemical energy store.

-Gravitational Potential: Anything that has mass and is inside a gravitational field has a Gravitational
Potential store.

-Elastic Potential: Anything that is stretched or compressed.

-Electrostatic: Anything with an electric charge that is interacting with another electric charge.

-Magnetic: Anything magnetic that is interacting with another magnet.

-Nuclear: Nuclei in atoms have energy in this store that can be released in nuclear reactions.



Energy transfers

· System: word for a single object or a group of objects that are the main subject(s) of interest.

· Closed system: systems where neither matter nor energy can enter or leave. The net change in the
total energy of a closed system is always zero.

· When a system changes, energy is transferred. It can be transferred into or away from a system,
between different objects in the system, or between various kinds of energy stores.

· Different ways that energy can be transferred between stores in four main ways:
-Mechanically: an object moving due to a force acting on it.

-Electrically: a charge (current) moving through a potential difference.

-By heating: energy transferred from a hotter object to a colder object.

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