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What is the ability to cause change? |
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What is the energy an object has due to its motion? |
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What is the energy stored in an object because of its posistion? |
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The potential energy of an object is greater if it is what? |
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What does potential energy depend on? |
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mass- the more mass an object has, the more potential energy it has |
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Thermal energy released by chemical reactions comes from another form of energy called what? |
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What is the energy stored in chemical bonds? |
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What is the energy carried by light called? |
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What is the electric current that comes out of batteries and wall sockets? |
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What do nuclear powerplants use? |
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the energy stored in the nucleus of an atom to generated electricity |
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Ever what contains energy that can be transformed into other forms of energy? |
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According to what, energy is never created or destroyed? |
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law of conservation of energy |
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What only moves from something at a higher temperature to something at a lower temperature? |
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What is a device that transforms kinetic energy into electrical energy? |
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When does chemical energy change into thermal energy? |
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When does electrical energy change into thermal energy? |
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when a wire that is carving an electric current goes hot |
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What are the 2 sources that Earth recieves energy from? |
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the sun and radioactive atoms in Earth's interior |
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coal, oil, and natural gas |
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What were made from the remains of microscopic organisms that lived in Earth's oceans millions of years ago? |
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What was formed by similar process from the remains of ancient plans that once lived on land? |
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What is a nonrenewable resource? |
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Definition
an energy source that is used up much faster than it can be replaced |
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What are nonrenewable resources? |
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Definition
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What is the larges renewable source of energy? |
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What is a renewable resource? |
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an energy source that is replenished continually |
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What do alternative resources include? |
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solar energy, wind, and gothermal energy |
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Because the sun will go on producing an enormous amount of energy for billions of years, the sun is what? |
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an inexhaustable source of energy |
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What is an inexhaustable resource? |
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an energy source that can't be used up by humans |
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What is a device that transforms radiant energy directly into electrical energy? |
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What is one way to make the supply of fossil fuels last longer? |
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What is reducing the use of energy called? |
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the sum of the kinetic and potential energy of the particles in a material? |
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What are the two key components of kinetic energy? |
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