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Introduction to Energy and Its Transformations

Learn about the basics of energy and its various forms, including potential and kinetic energy, transformations, the law of conservation of energy, temperature, thermal energy, heat transfer, and chemical energy.

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Introduction to Energy and Its Transformations

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  1. Intro to . . . Energy

  2. Energy is the ability to cause change.

  3. Termsto Know • potential energy • kinetic energy • transformations • law of conservation of energy • temperature • thermal energy • heat • radiation • conduction • convection • chemical energy

  4. Transformations A change of energy from one form to another. For example . . .

  5. Exploding fireworks are a transformation of chemical energy into thermal and light energy.

  6. KineticEnergyEnergy of movementDepends on mass and speed PotentialEnergy Energy of position Depends on where it is in relation to gravity, magnetism, or some other force vs.

  7. LAW OF CONSERVATION OF ENERGY Energy is neither created nor destroyed; it only changes form

  8. Thermal Energy Total Kinetic Energy of the particles in a material

  9. TEMPERATURE HEAT Transfer of Thermal energy VS. Measure of Kinetic energy

  10. How Thermal Energy Moves . . . • Radiation • Conduction • Convection

  11. Chemical Energy Endothermic Exothermic

  12. Energy changing from one form to another is called a A: translocation B: transformation C: transportation D: transfer

  13. Energy is A: only available when a force acts on an object. B: only found in moving objects. C: the ability of an object to stay at rest. D: the ability to cause change.

  14. Which of the following is an example of an energy transformation? A: light is reflected in a mirror B: a rock sits on the ground C: electricity travels through a light bulb which lights the room D: all of the above

  15. Energy is used in homes to A: cook vegetables in a microwave B: light rooms C: play music from the stereo D: all of the above

  16. A wagon sitting still at the top of a hill has A: neither potential or kinetic energy B: only potential energy C: only kinetic energy D: both potential and kinetic energy

  17. The Law of Conservation of Energy states that A: all vehicles must meet special standards to save gas. B: energy is neither created nor destroyed, it only changes form. C: ecosystems always lose energy as they develop. D: the food chain retains energy from one level to another.

  18. Which is true of kinetic energy? A: it depends on mass and speed B: it is energy of position C: it depends on where an object is in relation to an energy source D: exists in motionless objects

  19. The total kinetic energy of the particles in a material is called A: thermal energy B: kinetic energy C: potential energy D: chemical energy

  20. Temperature is A: the total amount of chemical energy of a substance B: the measure of heat C: the measure of kinetic energy in a substance D: the measure of resistance to heat

  21. What is heat? A: transfer of thermal energy B: measure of temperature C: measure of kinetic energy D: transfer of potential energy

  22. Thermal energy flows from a system of high temperature to a system of low temperature. A: True B: False

  23. Which of the following is NOT a way that energy moves: A: conduction B: convection C: radiation D: mediation

  24. Energy that is stored within bonds of molecules is A: kinetic B: chemical C: radiant D: light

  25. Radiation involves the transfer of energy by A: particle collisions B: waves C: airflow D: temperature change

  26. The type of energy motion that may occur in a vacuum (without matter present) is A: radiation B: conduction C: convection D: all of the above

  27. The explosion of TNT involves breaking of chemical bonds that release thermal energy. This type of chemical reaction is called A: an endothermic reaction B: an exothermic reaction C: an replacement reaction D: a synthesis reaction

  28. As a snowflake falls, it A: loses kinetic energy and gains potential energy B: loses potential energy and gains kinetic energy C: gains potential and kinetic energy D: loses potential and kinetic energy

  29. What does a thermometer measure? A: heat B: total energy C: average kinetic energy D: chemical energy

  30. Solar panels are used to heat the water of a swimming pool. This represents a transformation of A: solar to kinetic energy B: thermal energy to electrical energy C: electrical energy to solar energy D: solar energy to potential energy

  31. Energy conversions are never 100% efficient. Whenever energy is transferred some becomes heat energy that is no longer available to do work. A: True B: False

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