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Energy: Stores and Transfers
A free video lesson on energy — the different energy stores, how energy is transferred, the law that energy is always conserved, why energy gets wasted, and where our energy comes from. Followed by real quiz questions, marked instantly. No account needed.
Energy is one of the biggest ideas in physics. This lesson explains energy stores (kinetic, gravitational, chemical and more), how energy is transferred, the law of conservation of energy, wasted energy and efficiency, and renewable versus non-renewable resources. It is part of Learning Hub, a UK-curriculum learning site built by a home-educating family.
Pick a topic and have a go — science, no account needed:
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Questions parents ask
- What is the law of conservation of energy?
- The total energy always stays the same — energy is only transferred between stores, never created or destroyed. Some is usually wasted (dissipated) as heat.
- What are the main energy stores?
- Kinetic (movement), gravitational (height), chemical (fuel and food), elastic (stretched objects), thermal (hot objects) and nuclear (inside atoms). Energy is measured in joules.
- Is this suitable for KS3 and GCSE?
- Yes. Energy stores and transfers is a core physics topic for Years 9 to 11 (KS3 and GCSE), and this lesson and quiz work as a clear introduction.
- Is it really free?
- The video and these questions are free with no account. The full site is £6.99 a month for the whole family, with a 14-day free trial and no card needed to start.