GCSE Physics (Triple) Eduqas
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48 topics in 10 modules
โ๏ธ Energy 5 topics
- Energy Changes in a System
- Storing Energy
- Conservation and Dissipation
- National and Global Energy Sources
- Energy Transfers
โ๏ธ Particle Model of Matter 2 topics
- Particle Model of Matter
- Matter: Density
โ๏ธ Forces 3 topics
- Forces and their Interactions
- Pressure and Pressure Differences in Fluids
- Moments, Levers and Gears
โ๏ธ Forces and Motion 7 topics
- Speed and Velocity
- Speed as Distance Over Time
- Acceleration
- Distance-time and Velocity-time Graphs
- Forces and Accelerations
- Newton's Laws
- Safety in Public Transport
โ๏ธ Waves in Matter 2 topics
- Waves in Air, Fluids and Solids
- Waves at Material Interfaces: Applications in Exploring Structures
โ๏ธ Light and Electromagnetic Waves 7 topics
- Frequency Range of the Spectrum
- Electromagnetic Radiation
- Light and EM Waves: Lenses
- Light and EM Waves: Colour and Frequency
- Light and EM Waves: Differential Effects in Transmission
- Light and EM Waves: Absorption and Diffuse Reflection
- Light and EM Waves: Black Body Radiation (Qualitative)
โ๏ธ Electricity 4 topics
- Current, Potential Difference and Resistance
- Series and Parallel Circuits
- Static Electricity โ Forces and Electric Fields
- Electricity: Domestic Uses and Safety
โ๏ธ Magnetism and Electromagnetism 7 topics
- Permanent and Induced Magnetism
- Magnetic Forces and Fields
- Magnetic Effects of Currents
- The Motor Effect
- Induced Potential and Transformers
- Microphones and Loudspeakers
- Oscillating Currents in Detection and Generation of Radiation
โ๏ธ Atomic Structure 6 topics
- Nuclear Atom and Isotopes
- Absorption and Emission of Ionising Radiations
- Hazards and Uses of Radioactive Emissions
- Background Radiation
- Nuclear Fission
- Nuclear Fusion
โ๏ธ Space Physics 5 topics
- The Solar System
- Stability of Orbital Motions
- Space Physics: Satellites
- Space Physics: Red-shift
- Space Physics: The Big Bang
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GCSE Physics (Triple) Eduqas Revision Content
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GCSE Physics (Triple) Eduqas - Energy - Energy Changes in a System Content Preview
Energy
Energy Changes in a System
Energy Changes in a System
Systems and Energy
- A system is an object or a group of objects.
- Systems can have energy stored in various ways. These ways include kinetic, thermal, gravitational potential, elastic potential, chemical, nuclear, and magnetic.
- Energy cannot be created or destroyed but only converted from one form to another. This is the principle of conservation of energy.
- Energy changes in a system can be calculated using the equation: change in energy = work done
Energy Transfers
- Energy transfers can occur by mechanisms such as heating or doing work.
- Energy can also be transferred between stores. For example, an object falling under gravity transfers energy from its gravitational potential energy store to its kinetic energy store.
- When energy is transferred between stores, some energy can be dissipated and spread into the surroundings, often as thermal energy.
Power
- The rate of energy transfer, or the rate of doing work, is measured as power.
- Power can be calculated using the equation: power = work done รท time
- The unit of power is the watt (W), where 1 W = 1 J/s.
Efficiency
- Efficiency is a measure of how much useful energy is transferred.
- The efficiency of an energy transfer can be calculated using the equation: efficiency = (useful power out รท total power in) x 100%
- No energy transfer is 100% efficient as some energy is always dissipated as wasted energy, usually in the form of heat.
- The goal for any system is to maximize the efficiency of the energy transfer.
Renewable and Non-renewable Energy Sources
- Energy sources can be classified as renewable and non-renewable.
- Renewable energy sources, such as wind and solar, are sustainable and will not run out.
- Non-renewable energy sources, like fossil fuels, are finite and will eventually run out.
- While renewable energies are more sustainable, there are issues with generating and storing sufficient power to meet demands.
- Non-renewable energies typically have larger environmental impacts, such as contributing to climate change through the release of carbon dioxide.
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