Year 8 physics knowledge organiser – energy
Use this knowledge organiser to support students' learning throughout a topic on energy.
Suitable for year 8 students and based on the AQA KS3 science syllabus, it provides opportunities to review, recall and test students' knowledge and understanding of key concepts.
The knowledge organiser should be shared with students at the start of the topic and works well when used for homework and pre-learning tasks.
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Browse our knowledge organisers for other topics and key stages, or explore our energy collection for classroom activities, lessons and printable worksheets.
An extract from the energy knowledge organiser for year 8:
Compare and contrast the three ways that energy can be moved from one place to another by heating.
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Conduction |
Convection |
Radiation |
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Heat energy transferred by direct contact between objects. Atoms and molecules within objects gain energy and vibrate more frequently, transferring energy to neighbouring particles. Energy flows from the warmer object to the cooler object. Energy flow stops when objects reach same temperature. |
Occurs in fluids (gases and liquids). Involves the movement of atoms and molecules. As particles in a fluid gain energy, they rise upwards. When they lose energy, they sink back down. When particles gain energy, they move further apart. This changes the density of the fluid. |
All objects radiate energy. Energy is transferred by electromagnetic waves such as light, microwaves and infrared radiation. This energy does not need particles to transfer it. Radiation travels across the vacuum of space. |
