Energy Transfer
What is kinetic energy?
The energy of an object due to its motion.
What is conduction?
The transfer of heat through direct contact between materials.
What is solar energy?
Energy from the sun that can be converted into thermal or electrical energy.
What is the law of conservation of energy?
Energy cannot be created or destroyed; it can only change forms.
What is potential energy?
The energy stored in an object due to its position or configuration.
What is convection?
The transfer of heat by the movement of fluids (liquids or gases).
What is wind energy?
Energy obtained from the movement of air, typically harnessed by wind turbines.
How can energy be conserved at home?
By using energy-efficient appliances, turning off lights, and improving home insulation.
What is entropy?
A measure of the disorder or randomness in a system.
What is radiation?
The transfer of heat through electromagnetic waves.
What is geothermal energy?
Energy derived from the heat stored beneath the Earth's surface.
What are energy-efficient appliances?
Appliances designed to use less energy to perform the same function.
Define thermal energy.
The total kinetic energy of particles in a substance.
Give an example of heat transfer through conduction.
A metal spoon getting hot from being in a pot of boiling water.
What is biomass energy?
Energy obtained from organic materials, such as plant and animal waste.
What is insulation and how does it conserve energy?
Materials that reduce heat transfer, helping to keep homes warm in winter and cool in summer.
What are the units of energy?
The SI unit of energy is the joule (J).
How does heat transfer in a vacuum?
Heat cannot transfer by conduction or convection; it can only transfer by radiation.
What is the role of hydroelectric power?
It generates electricity by using the gravitational force of falling or flowing water.
What is the significance of energy audits?
They assess energy use in a building and identify ways to improve efficiency and reduce costs.