GCSE Physics: Atomic Structure/Nuclear
Lesson 1: Energy Stores
1. Identify the 8 Main Energy Stores: Name and define kinetic, chemical, magnetic, elastic, thermal, gravitational, electrostatic, and nuclear energy stores.
2. Recognise When Energy Stores Increase or Decrease: Analyze real-world scenarios to determine how specific energy stores change during physical processes (e.g., accelerating, heating, compressing, or raising an object).
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Lesson 2: Energy Efficiency
1. Define Energy Efficiency: Understand efficiency as the proportion of total input energy that a device transfers into useful output energy rather than wasted energy.
2. Calculate and Rearrange Efficiency: Apply the formula (useful energy out/total energy in x100) to solve standard problems and rearrange it to find unknown input values.
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Lesson 3: Elastic Potential Energy
1. Define and Determine Spring Extension: Understand elastic potential energy as energy stored in a stretched or compressed spring [02:54] and calculate extension using extension = final length-initial length
2. Calculate and Rearrange Elastic Potential Energy: Apply the formula EPE = (1/2)ke^2 with correct SI units and rearrange it to solve for unknown extension or final length
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Lesson 4. Gravitational Potential Energy
1. Calculate Gravitational Potential Energy Using Both Forms of the Equation: Apply the main formula GPE =mgh using correct SI units and recognize that GPE = Wh when weight is already provided.
2. Rearrange the Gravitational Potential Energy Formula: Manipulate GPE =mgh to solve for unknown variables like mass m = GPE/gh
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Lesson 5. Kinetic Energy
1. Calculate and Rearrange Kinetic Energy: Apply the formula E = (1/2)mv^2 using correct SI units and rearrange it to solve for unknown variables like velocity v = sqrt((2 E) / m).
2. Analyze Factors Affecting Kinetic Energy: Understand how mass and velocity influence kinetic energy, demonstrating that doubling velocity has four times the impact on kinetic energy compared to doubling mass.
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Lesson 6. GPE to KE energy transfers
1. Understand Energy Conservation in Falling Objects: Explain how gravitational potential energy (GPE) is converted into kinetic energy (KE) as an object falls, applying the principle that GPE lost = KE gained when air resistance is ignored.
2. Equate and Rearrange GPE and KE Formulas: Combine $m * g * h$ and $0.5 * m * v^2$ by canceling out mass to derive and use equations like v = sqrt(2 * g * h) to solve for speed or GPE = 0.5 * m * v^2 to solve for initial energy.
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Lesson 7. Work Done
1. Define Work Done and Its Equation: Understand that work done is energy transferred using forces, applying the formula W = F * s with the correct SI units (Joules for work done, Newtons for force, and meters for distance).
2. Calculate and Rearrange for Unknown Variables: Apply the formula to solve for work done and rearrange it to find unknown variables such as force (F = W / s) or distance.
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Lesson 8. Power
1. Define Power and Its Formula: Understand that power is the rate at which energy is transferred (or work is done), using the formulas P = E / t or P = W / t with SI units (Watts for power, Joules for energy/work done, and seconds for time).
2. Calculate, Convert Units, and Rearrange Equations: Convert units (such as minutes to seconds) and rearrange the power formula to solve for missing variables like energy (E = P * t) or time.
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Lesson 9. Specific Heat Capacity
1. Define Specific Heat Capacity and Its Equation: Understand that specific heat capacity is the amount of energy required to change the temperature of 1 kilogram of a substance by 1 degree Celsius, using the equation E =mc(Δθ) with the correct SI units (Joules for energy, kilograms for mass, J/(kg °C) for specific heat capacity, and °C for temperature change).
2. Calculate Energy and Rearrange to Find Specific Heat Capacity: Calculate the thermal energy needed for a given temperature change and rearrange the formula to solve for specific heat capacity (c = E / (m * Δθ) or other missing variables.