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level: Conservation of Energy

Questions and Answers List

level questions: Conservation of Energy

QuestionAnswer
What are the Different Energy Stores? Give a Simple Definition for Each-Kinetic: Simply things that Move has Energy here -Thermal: Hotter = More Energy here -Chemical: Things that release Energy via a Chemical Reaction [Food] -Gravitational Potential: Anything in a Field [Stationary] -Elastic: Things that are Stretching -Electrostatic: 2 Charges that Attract or Repel -Magnetic: 2 Magnets that Attract or Repel -Nuclear: Energy that's from Atomic Nuclei in Nuclear Reactions
How can Energy be Transferred?-Mechanically: An Object that Moves due to a Force -Electrically: Charge moving through a Potential Difference -Heating: Energy Transferred from a Hotter to Colder Object -Radiation: Energy Transferred via Waves
What is the Law of Conservation of Energy-This is Energy can be Stored, Transferred and be Dissipated - but never Created nor Destroyed. Total Energy in a Closed System = No Net Change-Closed System = Objects that don't have any Matter being Exchanged with the Surroundings
A Ball is Rolling up a Slope, Describe the Energy Transfers-Energy is Transferred Mechanically [Force pushing it up the Hill] from the Kinetic Energy Store to the Gravitational Potential Energy Store
A Bat hitting a Ball, Describe the Energy Transfers-Kinetic Energy Store, in the Bat, is Transferred Mechanically [Force] to the Thermal Energy Store of the Bat -Also, some of the Kinetic Energy in the Bat is also Transferred Mechanically to the Kinetic Energy Store of the Ball -Then Finally, there is Energy being Given off [Sound]
A Car Slows Down [No Braking], Describe the Energy Transfers-Kinetic Energy Store in the Car is Transferred Mechanically [Because of Friction-Force] to the Thermal Energy Store of the Car and the Road
Electric Kettle boiling Water, Describe the Energy Transfers-Energy is Transferred from the Mains, to the Kettle's Thermal Energy Store, which is then Transferred through Heating to the Thermal Energy Store of Water