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Unit 3, Lesson 3 Vocab. Science 7. Thermal Energy. Book Definition: The total potential and kinetic energies of an object. Snip-it: Heat you feel Examples: heat from sun, heat from friction. conduction. transfer of thermal energy by collisions between particles in matter.
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Unit 3, Lesson 3 Vocab Science 7
Thermal Energy • Book Definition: • The total potential and kinetic energies of an object
Snip-it: • Heat you feel • Examples: heat from sun, heat from friction
conduction transfer of thermal energy by collisions between particles in matter
convection transfer of thermal energy by the movement of particles from one part of a material to another
Cycleof rising and sinking of energy throughout a material Happens in water; happens in atmosphere
heat movement of thermal energy from a region of higher temperature to a region of lower temperature
radiation transfer of thermal energy by electromagnetic waves
Heat transfer from something that is warmer than its surroundings The only form of energy that moves through EMPTY SPACE
Conductors • Definition: • A type of material that transfers the kinetic energy of particles better than others
Snip it: • Allows heat to transfer quickly and easily from one material to another • Example: metal
calorie • Definition: • The amount of energy needed to raise the temperature of 1 g of water by 1 degree Celsius
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
Insulator • Definition: • A material that is a poor conductor of heat
Snip it: • Doesn’t allow heat to transfer from one object to another very easily