Key Words
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Definition
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Energy
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The strength and vitality required for sustained physical or mental activity. The ability to do work.
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Chemical Energy
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Chemical Energy is energy stored in the bonds of chemical compounds (atoms and molecules). It is released in a chemical reaction, often producing heat as a by-product (exothermic reaction). Batteries, biomass, petroleum, natural gas, and `coal are examples of stored chemical energy.
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Light Energy
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Light energy is defined as how nature moves energy at an extremely rapid rate, and it makes up about 99% of the body's atoms and cells, and signal all body parts to carry out their respective tasks. An example of light energy is the movement of a radio signal.
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Electrical Energy
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Electrical energy can be used to move charged particles through a wire from a power plant to our homes and businesses. The movement of a charged particle through a wire is called current, or more commonly, electricity. Electricity is used to work various appliances in our homes.
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Electromagnetic Energy
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A form of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space. There are many forms of electromagnetic energy including gamma rays, x rays, ultraviolet radiation, visible light, infrared radiation, microwaves and radio waves.
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Food Energy
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Food energy is chemical energy that animals (including humans) derive from food through the process of cellular respiration.
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Geothermal Energy
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Geothermal energy is heat energy generated and stored in the Earth. ... The adjective geothermal originates from the Greek roots γη (ge), meaning earth, and θερμος (thermos), meaning hot. Earth's internal heat is thermal energy generated from radioactive decay and continual heat loss from Earth's formation.
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Magnetic energy
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Defined at each point in a given magnetic field to be equal to the work done in bringing a unit north pole from infinity to the point. ... Also called magnetic scalar potential.
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Solar Energy
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raRadiant energy emitted by the sun.
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Nuclear Energy
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The energy released during nuclear fission or fusion, especially when used to generate electricity.
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Potential Energy
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The energy possessed by a body because of its height or position relative to others.
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Kinetic Energy
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The energy which a body possesses when it’s moving.
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Renewable Energy
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Energy from a source that is not depleted when used, such as wind or solar power.
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Non-renewable Energy
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A nonrenewable resource is a resource of economic value that cannot be readily replaced by natural means on a level equal to its consumption. Most fossil fuels, such as oil, natural gas and coal are considered nonrenewable resources in that their use is not sustainable because their formation takes billions of years.
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Learning Intention: To learn about energy transformations. Energy cannot be created Nor destroyed but can be transferred from one place to another. and Transformed (changed) from one form to another - Law of conservation of Energy.
Food| ,
Chemical potential energy → Kinetic energy + heat energy + sound energy
Light bulb| ,
Electrical potential energy → Light energy + heat energy
Man climbing a hill|
Chemical potential → Kinetic energy + heat energy → gravitational potential energy .
Car moving →
Chemical potential energy + Kinetic energy + Heat energy + Sound energy + Petrol energy + Light energy
Rocket launching →
Chemical potential energy + Kinetic energy + Heat energy + Sound energy → Gravitational energy + Light energy.
School bell ringing →
Electrical potential energy + Sound energy.
This learning was
