Unit 2 science test Flashcards
Describe thermal energy
the amount of kinetic energy present in an object
Describe heat
the transfer of thermal energy
Describe temperature
the measure of the amount of kinetic energy present in an object
Describe how objects of different temperatures reach equilibrium
the thermal energy is always transferred from the warmer object to the cooler object until the two objects reach the same temperature
what are 3 conductors
Gold, silver, copper
what are 3 insulators
wood, rubber, Styrofoam
How is a conductor able to transfer energy and why can an insulator not
Conductors atoms are really dense and close together and insulators atoms are far apart and not able to relay energy from atom to atom
Describe conduction
thermal energy is transferred by solid to solid direct contact
Describe convection
thermal energy is transferred by a medium (liquid or gas)
Describe Radiation
thermal energy that can be transferred through nothing (empty space) pr through any substance
example of conduction
touching a hot stove top
example of convection
the furnace in your home boiling water on a stove
example of radiation
sitting by a campfire
what is endothermic
energy being absorbed
what is exothermic
energy being released
