1
Q
Efficiency =
A
= useful output energy transfer
————————————— x 100
Total input energy transfer
= useful power output
—————————— x 100
Total power input
2
Q
Sankey Diagram:
A
shows how much energy is transferred to different energy stores
3
Q
Efficiency:
A
the proportion of energy supplied that is transferred in useful ways
AQA GCSE Physics
flashcards
Decks in class (102)
# Cards
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Pre-Fixes8
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4.1.1.1 Energy Stores and Systems24
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4.1.1.2 Changes in Energy9
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4.1.1.3 Energy Changes in Systems2
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Required Practical Activity 13
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4.1.1.4 Power5
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4.1.2.1 Energy Transfers in a System8
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Required Practical Activity 29
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4.1.2.2 Efficiency3
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4.1.3 National and Global Energy Resources47
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4.2.1.1 Standard Circuit Diagram Symbols14
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4.2.1.2 Electrical and Charge Current14
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4.2.1.3 Current, Resistance and Potential Difference26
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Required Practical 3 - Use circuit diagrams to set up and check appropriate circuits to investigate the factors affecting the resistance fo electrical circuits10
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Required Practical Activity 418
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4.2.1.4 Resistors20
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4.2.2 Series and Parallel Circuits7
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4.2.3.1 Direct and Alternating Potential Difference11
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4.2.3.2 Mains Electricity17
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4.2.4.1 Power7
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4.2.4.2 Energy Transfers in Everyday Appliances7
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4.2.4.3 The National Grid6
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4.2.5.1 Static Charge22
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4.2.5.2 Electric Fields10
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4.3.1.1 Density of Materials4
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Required Practical Activity 54
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4.3.1.2 Changes of State8
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4.3.2.1 Internal Energy14
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4.3.2.2 Temperature Changes in a System and Specific Heat Capacity4
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4.3.2.3 Changes of State and Specific Latent Heat7
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4.3.3.1 Particle Motion in Gases17
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4.3.3.2 Pressure in Gases (physics only)9
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4.3.3.3 Increasing the Pressure of a Gas (physics only)7
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4.4.1.1 The Structure of an Atom6
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4.4.1.2 Mass Number, Atomic Number and Isotopes6
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4.4.1.3 The Development of the Model of the Atom8
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4.4.2.1 Radioactive Decay and Nuclear Radiation11
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4.4.2.2 Nuclear Equations5
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4.4.2.3 Half-lives and the Random Nature of Radioactive Decay3
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4.4.2.4 Radioactive Contamination7
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4.4.3.1 Background Radiation5
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4.4.3.2 Different Half-lives of Radioactive Isotopes3
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4.4.3.3 Uses of Nuclear Radiation4
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4.4.4.1 Nuclear Fission14
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4.4.4.2 Nuclear Fusion5
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4.5.1.1 Scalar and Vector Quantities5
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4.5.1.2 Contact and Non-contact Forces18
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4.5.1.3 Gravity18
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4.5.1.4 Resultant Forces15
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4.5.2 Work Done and Energy Transfer4
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4.5.3 Forces and Elasticity14
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Required Practical Activity 6 - Investigate the relationship between force and extension of a spring14
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Elastic Band Force Extension Practical2
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4.5.4 Moments, Levers, and Gears (physics only)15
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4.5.5.1.1 Pressure in a Fluid 19
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4.5.5.1.2 Pressure in a Fluid 2 (HT only)19
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4.5.5.2 Atmospheric Pressure12
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4.5.6.1.1 Distance and Displacement2
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4.5.6.1.2 Speed12
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4.5.6.1.3 Velocity3
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4.5.6.1.4 The Distance–Time Relationship7
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4.5.6.1.5 Acceleration19
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4.5.6.2.1 Newton's First Law9
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4.5.6.2.2 Newton’s Second Law5
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Required Practical Activity 714
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4.5.6.2.3 Newton’s Third Law8
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4.5.6.3.1 Stopping Distance9
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4.5.6.3.4 Factors Affecting Braking Distance 23
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4.5.6.3.3 Factors that Affect Braking Distance 13
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Required Practical Activity 7 - 2nd Experiment3
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4.5.7.1 Momentum is a Property of Moving Objects3
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4.5.7.2 Conservation of Momentum2
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4.5.7.3 Changes in Momentum9
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4.6.1.1 Transverse and Longitudinal Waves9
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4.6.1.2 Properties of Waves10
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Required Practical 8 - Measure the frequency, wavelength and speed of waves in a ripple tank and waves in a solid and take appropriate measurements9
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4.6.1.3 Reflection of Waves (physics only)11
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Required Practical 9 - Investigate the reflection and refraction of light by different substances7
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4.6.1.4 Sound Waves (physics only) (HT only)21
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4.6.1.5 Waves for Detection and Exploration (physics only) (HT only)20
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4.6.2.1 Types of Electromagnetic Waves6
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4.6.2.2 Properties of Electromagnetic Waves 18
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4.6.2.3 Properties of Electromagnetic Waves 210
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4.6.2.4 Uses and applications of Electromagnetic Waves7
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4.6.2.5 Lenses (physics only)17
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4.6.2.6 Visible Light (physics only)13
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4.6.3.1 Emission and Absorption of Infrared Radiation4
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4.6.3.2 Perfect Black Bodies and Radiation13
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4.7.1.1 Poles of a Magnet7
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4.7.1.2 Magnetic Fields7
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4.7.2.1 Electromagnetism11
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4.7.2.2 Flemming's Left Hand Rule (HT only)9
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4.7.2.3 Electric Motors (HT only)7
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4.7.2.4 Loudspeakers (physics only) (HT only)6
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4.7.3.1 Induced Potential (HT only)8
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4.7.3.2 Uses of the Generator Effect (HT only)13
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4.7.3.3 Microphones (HT only)4
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4.7.3.4 Transformers13
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4.8.1.1 Our Solar System7
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4.8.1.2 The Life Cycle of a Star7
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4.8.1.3 Orbital Motion, Natural and Artificial Satellites7
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4.8.2 Red Shift (physics only)12
