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35 Cards in this Set
- Front
- Back
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What are the five stages of Energy for Societal Use?
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The five stages are energy source, converter, carrier, storage, and end-use.
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What is an energy source?
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Energy is neither created nor destroyed. Energy is conserved, but society has special names for energy stages. Stage 1 is an energy source. Examples of energy sources: gravitational energy, wind energy, light energy, chemical energy (gasoline), nuclear energy (uranium), etc.
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What is an energy converter?
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Energy is neither created nor destroyed. Energy is conserved, but society has special names for energy stages. Stage 2 is an energy converter. Examples of energy converters: generator (convert to mechanical to electrical energy), solar panel (convert light to electrical), fuel cell (converts chemical to electrical), etc.
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What is an energy carrier?
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Energy is neither created nor destroyed. Energy is conserved, but society has special names for energy stages. Stage 3 is an energy carrier. Examples of energy carriers: wires (carries electrical energy), tubes (carries chemical energy), gears (carries mechanical energy), etc.
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What is an energy storage?
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Energy is neither created nor destroyed. Energy is conserved, but society has special names for energy stages. Stage 4 is an energy storage. Examples of energy storages: batteries (stores electrical energy), capacitor (stores electrical energy), tanks (stores chemical energy), etc.
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What is an energy end-use?
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Energy is neither created nor destroyed. Energy is conserved, but society has special names for energy stages. Stage 5 is an energy end-use. Examples of energy end-use: light bulb (light energy), motor/fan (mechanical energy), motor/vehicle (mechanical energy), buzzer (mechanical energy), etc.
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What is mechanical energy?
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The mechanical energy of an object is the sum of its energy in motion and its position. This means it is the sum of its kinetic and potential energy. Although the kinetic and potential energy of an object can change, the total mechanical energy remains the same.
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What are examples of mechanical energy?
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Many answers accepted: wind speed, water dam, water flowing, person skying down a hill, etc. Review the powerpoint presentation on mechanical energy.
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What is electrical energy?
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Electrical energy is energy that comes from electrical potential energy (voltage) and kinetic energy (current). This energy is generated by the movement or position of positive and negative particles or electricity. Once electrical energy leaves its source, it is instantly transformed into a different kind of energy.
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What are examples of electrical energy?
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Many answers excepted: electrons moving in a wire (energy carrier), electrons in a battery or capacitor (energy storage), electrons in a coil of wire with magnets (energy converter: generator), etc.
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What is light energy?
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Light energy is the only form of energy that we can actually see directly. It is formed from chemical, electrical, and mechanical energy converters. Light energy can also be converted into other forms of energy.
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What are examples of light energy?
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Many answers excepted: light bulb (energy end-use), solar panel (energy converter), etc.
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What is thermal energy?
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Thermal energy is the energy that comes from heat. This heat is generated by the movement of tiny particles within an object. The faster these particles move, the more heat is generated.
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What are examples of thermal energy?
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Many answers excepted: Thermal energy end-uses are stoves and air conditioners. Thermal energy converter is heat engine (energy converter: chemical to thermal to mechanical energy\)
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What are fossil fuels?
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A fossil fuel is a chemical energy (gasoline, diesel, kerosene, coal, uranium, etc.). These types chemical energies are non-renewable. Non-renewable energy has to be mined and/or drilled.
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How are fossil fuels used?
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Fossil fuels are chemical energies that are burned to give heat in an engine and move things (like cars).
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What are non-renewable sources?
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Energy sources that will run out one day (they are mined or drilled and will be gone one day).
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What are the 5 forms of energy?
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Thermal, chemical, light, electrical and mechanical
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What does the conservation of energy state?
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That energy cannot be created or destroyed. It can only be transferred.
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What does the law of conservation of energy state?
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Energy cannot be created or destroyed.
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What energy conversions are involved in a match being lit?
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It starts with chemical energy --> kinetic energy --> thermal/light energy.
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What energy conversions are involved in a pendulum swinging?
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It starts with gravitational potential energy (mechanical energy due to position above ground) and is converter to kinetic energy (mechanical energy due to motion/speed).
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what form of energy can you hear?
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sound is the form of mechanical energy that you can hear. It is the kinetic energy movement of air molecules.
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what form of energy can you see?
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light
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What is a fuel?
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An energy storage that can go through a chemical energy reaction to release thermal energy (heat).
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What is a RENEWABLE energy source?
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An energy source that can be replaced naturally, and so will not run out. For example, solar light will be available always because the sun is not going to be gone for a long time. It will not run out.
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What for of energy is biomass energy and what is it?
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It is a chemical energy that comes from material in the bodies of plants and animals. A biomass fuel is plant material (chemical energy) that can be burned to release thermal energy.
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What is chemical energy?
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Potential energy stored in chemical bonds is chemical energy.
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What is electrical energy?
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Electrical energy is the energy of electrical charges.
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what is energy needed for?
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Society has things that need to be done and energy end-use is what we call it. For example we can use light with solar panels to create electrical energy and store it in a battery during the day to light a light bulb at night. (light to light energy)
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what is friction?
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friction is when two things are rubbed together to make thermal energy (heat).
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What is non-renewable energy?
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Non-renewable energy is energy that will eventually run out.
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What is nuclear energy?
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Nuclear energy is the potential energy that is stored in the nucleus of an atom. During a nuclear reaction, nuclear energy is released.Energy released from the nucleus of an atom. Used mainly with uranium atomic bonds.
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What is renewable energy?
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Renewable energy is energy sourced from natural resources such as sunlight, wind and the tide that are constantly available.
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What are the common units of energy?
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The unit of energy is Joules (J) or kilo-watt-hour (kWh).
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