Energy Stores and Transfers

A comprehensive set of flashcards covering various aspects of energy stores, transfers, equations, and environmental impacts related to energy.

Energy Stores

The eight energy stores are thermal, kinetic, gravitational potential, elastic potential, chemical, magnetic, electrostatic, and nuclear.

Law of Conservation of Energy

Energy cannot be created or destroyed, only transferred, stored, or dissipated.

Ways Energy Can Be Transferred

The four main ways are mechanically, electrically, by heating, and by radiation.

Work Done Equation

The equation for work done is W = F × s; measured in joules (J).

Gravitational Potential Energy Equation

The equation is Ep = m g h.

Kinetic Energy Equation

The equation for kinetic energy is Ek = ½ m v².

Elastic Potential Energy Equation

The equation for elastic potential energy is Ee = ½ k e².

Power Equations

Two equations for power: (1) P = E / t; (2) P = W / t.

Efficiency Equations

Two equations for efficiency: (1) Efficiency = useful output energy / total input energy; (2) Efficiency = useful power output / total power input.

Improving Efficiency

Two ways to reduce energy waste are using lubrication to reduce friction and insulation to reduce heat loss.

Specific Heat Capacity Equation

The equation for specific heat capacity is E = m c ∆θ.

Purpose of Insulation in Specific Heat Capacity Experiment

Insulation is used to reduce energy loss to the surroundings by heating.

Renewable Energy Resources

Three renewable resources are solar, wind, and tidal.

Non-Renewable Energy Resources

Three non-renewable resources are coal, oil, and gas.

Environmental Impact of Burning Fossil Fuels

It produces carbon dioxide, which contributes to global warming.

Reliability of Non-Renewable Power Stations

They can produce energy at any time and are not dependent on weather conditions.