Energy. What is Energy? Energy is what makes matter move or change. It is the ability to do work and is needed in order to apply any type of force.
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1 Energy ompanion w answers.notebook pril 18, 2012 Energy 8th Gr. What is Energy? Energy is what makes matter move or change. It is the ability to do work and is needed in order to apply any type of force. 1
2 Energy ompanion w answers.notebook pril 18, 2012 Potential Energy Stored energy Kinetic Energy Energy of Motion Even though something is not moving, it still has energy. Potential Energy vs Kinetic Energy When you lift a box, you exert energy. This energy is stored as the box's Potential Energy. If you drop the box, that energy will transform to Kinetic Energy, because the box will be in motion. 2
3 Energy ompanion w answers.notebook pril 18, 2012 Potential Energy vs Kinetic Energy When a roller coaster is lifted to the top of the hill, the ride has used energy. This energy is stored as the train's Potential Energy. t the top of the hill, the train has a great deal of Potential Energy and very little Kinetic Energy. When you go into the drop, that energy will transform to Kinetic Energy, because the train will be in motion. Types of Energy hemical Energy The energy of food (the calories in food); released through chemical reactions Electrical Energy The energy that is stored within batteries and power plants to give us power Light Energy lso known as solar energy Mechanical Energy The energy stored within the parts of a mechanical system; this is the energy of an object to do something Thermal Energy The energy of heat Nuclear Energy The energy obtained from breaking down atoms into their subatomic parts Radiant Energy - Energy that travels through empty space as waves 3
4 Energy ompanion w answers.notebook pril 18, 2012 rain Pop Quiz Grade: 8th Subject: Science ate: 4/13/12 Just for practice.. oesn't ount s Quiz Grade! 1 What is energy? hoose the best answer. nything that radiates light or heat nything that travels in the form of a wave ny object in motion nything that makes matter move or change 4
5 Energy ompanion w answers.notebook pril 18, Which of these objects has kinetic energy? ball moving through the air ball sitting on a table ball buried underground ball sitting on the edge of a cliff 3 What is the difference between kinetic energy and potential energy? Potential Energy is the energy of objects at rest; kinetic energy is the energy of objects in motion Kinetic energy is the energy of objects at rest; potential energy is the energy of objects in motion Potential energy has to do with chemistry; kinetic energy has to do with physics Kinetic energy has to do with chemistry; potential energy has to do with physics 5
6 Energy ompanion w answers.notebook pril 18, Which of the following objects has the most potential energy? ball sitting on the table ball resting on the ground ball that's sitting on a mountaintop ball that's been thrown in the air 5 Which of the following is synonymous with potential energy? Stored Energy Motion Energy Light Energy Kinetic Energy 6
7 Energy ompanion w answers.notebook pril 18, What would happen if you didn't have chemical energy in your body? hoose the best answer: You wouldn't be able to think You wouldn't be able to move You wouldn't be able to sleep You wouldn't be able to sit 7 What is the primary source of all light energy on Earth? Lightning Volcanoes The moon The sun 7
8 Energy ompanion w answers.notebook pril 18, Which of the following is an opinion about energy? Power plants and batteries supply us with electrical energy Kinetic energy is the energy of motion hemical energy is the most important source of energy Solar energy can be used to power people's homes 9 What do wind and moving water have in common? They both have Mechanical energy They both have hemical energy They both have Light energy They both have Nuclear energy 8
9 Energy ompanion w answers.notebook pril 18, How is nuclear energy released? y burning fuel y moving turbines y chemicals mixing y atoms fusing together and splitting apart 9
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