Energy Resources and Storage

Wind energy is highly dependent on weather patterns; if there is no wind, the turbines cannot generate electricity, making it the most weather-dependent source listed.

Fossil fuels (coal, oil, natural gas) take millions of years to form, meaning they cannot be replaced on a human timescale, making them nonrenewable.

Coal remains the most significant source for global electricity generation, providing over 40% of the world's power, despite the growth of renewable energy sources.

Coal is a fossil fuel formed over millions of years and cannot be replenished on a human timescale, making it a non-renewable or exhaustible resource.

Renewable resources are those that can be naturally replenished over time. Groundwater, forests, wildlife, and fish are all examples of resources that can regenerate.

A renewable resource is one that can be replenished naturally over a short period. Oxygen is continuously replenished through photosynthesis, whereas coal, oil, and natural gas are fossil fuels that take millions of years to form.

A potential reserve refers to energy resources that are believed to exist based on geological data but have not yet been confirmed or proven through drilling or exploration.

Before machines, humans relied on their own labor and the labor of domesticated animals (like horses and oxen) to perform heavy work and transport goods.

Despite the growth of renewable energy, the vast majority of global energy consumption is still derived from fossil fuels like coal, oil, and natural gas.

Geothermal energy harnesses the heat generated within the Earth, often from radioactive decay, to produce steam and generate electricity.

Solar energy systems use photovoltaic cells or mirrors to convert sunlight directly into electricity or heat.

Non-renewable resources exist in finite amounts and cannot be replenished on a human timescale, meaning they will eventually run out.

Volcanoes are fueled by heat from Earth's interior, which drives mantle convection and magma formation. Weather, ocean circulation, and erosion are primarily driven by solar energy.

Renewable resources can be replenished over short time spans (like lumber or crops). Iron is a mineral resource that takes millions of years to form, making it nonrenewable.

Energy from flowing water (hydroelectric) is renewable because the water cycle is constantly replenished by solar energy. Petroleum, coal, and iron are finite resources.