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28 Cards in this Set

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What is energy?
Energy is the ability to cause change.
What is kinetic energy?
Kinetic energy is energy due to motion.
What is potential energy?
Potential energy is stored energy due to the interactions between objects or particles.
What are the three forms of potential energy?
The three forms of potential energy are gravitational, elastic, and chemical.
Name at least 4 of 6 forms of energy.
Mechanical, sound, thermal, electri, radiant, nuclear.
What is the Law of Conservation of Energy.
Energy cannot be created or destroyed but it can be transformed from one form to another.
Friction results in what energy transformation?
Friction results in the transformation of mechanical energy to thermal energy.
What are nonrenewable energy resources?
It is an energy resource that cannot be replaced as fast as it is being used.
What are renewable energy resources?
It is an energy resource that can be replaced as fast as it is being used.
Give two examples of nonrenewable resources.
Coal, oil, natural gas, diesel, or kerosene
Five two examples of renewable resources.
Hydroelectric, solar, wind, biomass, geothermal
What is thermal energy?
It is the sum of the kinetic energy and the potential energy of the particles that make up a material.
What is temperature?
It's the average kinetic energy of the particles that make up a material.
What is heat?
It's the movement of thermal energy from a warmer object to a cooler object.
What are three ways in which thermal energy is transferred?
Radiation, conduction, convection.
What is radiation?
The transfer of thermal energy by electromagnetic waves.
What is conduction?
conduction is the transfer of thermal energy between materials by the collisions of particles.
What is a thermal conductor?
It's a material through which thermal energy flows easily.
What is a thermal insulator?
It's a material through which thermal energy does not flow easily.
What is specific heat?
It is the amount of thermal energy required to increase the termperature of 1kg of a material by 1 degree C.
What is the relationship between thermal conductors and specific heat?
Thermal conductors have a low specific heat which means they heat up and cool down quickly.
What is the relationship between thermal insulators and specific heat?
Thermal insulators have a high specific heat which means they heat up and cool down slowly.
What is thermal contraction?
It's the decrease in the material's volume when the temperature decreases.
What is thermal expansion?
It's the increase in a material's volume when its temperature increases.
What is convection?
It's the transfer of thermal energy by the movement of particles from one part of a material to another.
What is a heating appliance?
It's a device that converts electric energy into thermal energy.
What is a thermostat?
It's a device that regulates the temperature of a system.
What is a heat engine?
It's a machine that converts thermal energy into mechanical energy.