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