Energy Stores and Resources
This page covers the fundamental concepts of energy stores and resources in physics, essential for understanding renewable energy resources in physics GCSE.
The page begins by listing various energy stores, including chemical, elastic, electrostatic, gravitational potential energy (GPE), kinetic, magnetic, nuclear, and thermal. It then delves into energy resources, categorizing them into renewable and non-renewable sources.
Renewable Energy Sources:
โข Hydroelectric
โข Solar
โข Tidal
โข Wave
โข Geothermal
โข Wind
โข Biomass
The text outlines the pros and cons of renewable energy sources:
Highlight: Renewable energy sources will never run out, can be replaced quickly, and don't release greenhouse gases.
However, they can be unreliable, don't release as much energy, and can be expensive due to weather dependence.
Non-Renewable Energy Sources:
โข Coal
โข Oil
โข Gas
โข Nuclear
Highlight: Non-renewable sources are cheap and convenient but will run out and are not easily replaced. They release greenhouse gases, contributing to global warming.
The page also covers energy transfer methods, including electrical, mechanical, heating, and radiation.
Important equations for calculating gravitational potential energy GCSE and other energy forms are provided:
Example:
โข Gravitational Potential Energy: Ep = mgh
โข Kinetic Energy: Ek = ยฝmvยฒ
โข Elastic Energy: Ee = ยฝkxยฒ
โข Work Done: W = Fs
โข Efficiency: Eff = (Useful energy or power out) / (Total energy or power in)
โข Power: P = E/t
โข Specific Heat Capacity: E = mcฮฮธ
โข Specific Latent Heat: E = mL
These equations are crucial for solving potential energy calculation examples in physics.
