Chapter 7 Energy

This is a flashcard about the topic Energy

Conservation of Energy

The principle that energy can change forms but cannot be created or destroyed.

Chlorophyll

A pigment in plants that traps light energy and converts it into chemical potential energy during photosynthesis.

Chemical Potential Energy

Energy stored in substances which can be released through chemical reactions.

Fossil Fuels

Non-renewable energy sources formed from the remains of dead plants and animals over millions of years. It contains chemical potential energy.

Non-renewable Resources

Energy sources that cannot be replenished once depleted, such as coal, crude oil, and natural gas.

Renewable Sources of Energy

Energy sources that can be used repeatedly and are not depleted, such as solar, wind, and geothermal energy.

Hydroelectrical Power Station

A facility that generates electricity by using the gravitational potential energy of water flowing through turbines.

Gravitational Potential Energy

The energy stored in an object because of its position within a gravitational field.

Kinetic Energy

The energy of moving things.

Geothermal Energy

Energy derived from the Earth's core, where hot rocks heat underground water to produce steam for electricity generation.

Biomass

Organic matter used to produce fuel for heat or electricity, derived from plant and animal waste.

Biogas

Methane produced by bacteria decomposing organic waste, which can be used as a fuel source.

Solar Energy

Energy from the sun that is converted into electrical energy by solar cells.

Wind Energy

Energy generated by the kinetic energy of wind turning turbines to produce electricity.

Tidal Energy

Energy generated from the potential energy of tides, converted into electricity using turbines.

Tidal Barrages

Structures built across the mouth of a bay to harness tidal energy for electricity generation.

Energy Conservation

Practices aimed at reducing energy consumption, such as turning off electrical appliances when not in use.