Geography exam revision

Geography exam revision december 2024

Ocean Currents

Ocean Currents

Large-scale flows of seawater that move continuously through the world's oceans.

Surface Currents

Currents driven by wind patterns that affect the upper layers of the ocean.

Deep-water Currents

Currents caused by differences in temperature and salinity, moving water on a global scale.

Plastic Garbage Patch

A large area of the ocean where plastic debris has accumulated due to ocean currents.

Great Pacific Garbage Patch

The most well-known garbage patch located between Hawaii and California.

Gyres

Areas where ocean currents converge and trap debris, leading to large areas of plastic accumulation.

Microplastics

Small plastic pieces that result from the breakdown of larger plastic debris and harm marine life.

Non-biodegradable

Materials that do not break down naturally in the environment, leading to long-term pollution.

Renewable Energies

Energy sources that are naturally replenished and do not run out or get depleted over time.

Solar Energy

Energy harnessed from the sun using solar panels.

Wind Energy

Energy generated by wind turbines.

Hydroelectric Energy

Power generated by the flow of water, typically from dams.

Geothermal Energy

Heat energy sourced from beneath the Earth's surface.

Biomass

Energy from organic materials like plant and animal waste.

Fossil Fuels

Energy sources like coal, oil, and natural gas that cannot be replenished within a human lifetime.

Energy Density

The amount of energy produced from a small volume of fuel.

Nuclear Energy

Energy produced by splitting the nuclei of atoms, typically used for electricity generation.

Environmental Impact (Fossil Fuels)

Burning fossil fuels releases harmful pollutants contributing to air pollution and climate change.

Depletion

The process of using finite resources like fossil fuels at rates leading to their eventual exhaustion.

Nuclear Waste

Radioactive byproducts from nuclear energy that remain hazardous for thousands of years.

Geopolitical Issues (Energy)

Political conflicts and energy insecurity arising from uneven distribution of oil and gas resources.