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Unit 3, Lesson 3 Vocab

This lesson on thermal energy covers key concepts such as potential and kinetic energy, heat transfer methods (conduction, convection, and radiation), and thermodynamic principles. Learn how heat is felt through various examples like the sun and friction. Discover the distinction between conductors and insulators and their roles in energy transfer. Key terms like calories and their measurement are also explained, providing a comprehensive foundation in thermal energy and its applications in everyday life.

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Unit 3, Lesson 3 Vocab

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  1. Unit 3, Lesson 3 Vocab Science 7

  2. Thermal Energy • Book Definition: • The total potential and kinetic energies of an object

  3. Snip-it: • Heat you feel • Examples: heat from sun, heat from friction

  4. conduction transfer of thermal energy by collisions between particles in matter

  5. Heat transfer BY HITTING particles in matter

  6. convection transfer of thermal energy by the movement of particles from one part of a material to another

  7. Cycleof rising and sinking of energy throughout a material Happens in water; happens in atmosphere

  8. heat movement of thermal energy from a region of higher temperature to a region of lower temperature

  9. When thermal energy moves from hot areas to colder areas

  10. radiation transfer of thermal energy by electromagnetic waves

  11. Heat transfer from something that is warmer than its surroundings The only form of energy that moves through EMPTY SPACE

  12. Conductors • Definition: • A type of material that transfers the kinetic energy of particles better than others

  13. Snip it: • Allows heat to transfer quickly and easily from one material to another • Example: metal

  14. calorie • Definition: • The amount of energy needed to raise the temperature of 1 g of water by 1 degree Celsius

  15. Snip it: • How much energy you need to increase the temperature 1 degree C • Can also be measured in Joules! • 1,000 calories = 1 Calorie (1 kilocalorie)  This means that each Calorie in FOOD contains 1,000 calories of energy

  16. Insulator • Definition: • A material that is a poor conductor of heat

  17. Snip it: • Doesn’t allow heat to transfer from one object to another very easily

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