Energy transfer
Delilah is using a hairdryer. What energy transfer is in action when she plugs the wire in the outlet?
electrical energy - thermal energy - kinetic energy
What type of energy is the kinetic movement of molecules?
Thermal Energy
what is thermal energy?
the total kinetic energy in an object
How does heat energy like to travel?
Hot to cold
what is radiation?
energy traveling as waves or particles through space or matter
what energy transfer is in action when you eat sushi?
chemical energy - thermal energy
What is chemical energy?
potential energy stored in the bonds between atoms and molecules, released or absorbed during chemical reactions.
What is temperature?
temperature is the average amount of kinetic energy in an object.
Does the size of an object affect how energy is transferred?
Yes - more molecules to transfer energy to
what is convection?
the transfer of heat in liquids and gases (fluids) through the movement of the fluid itself, where warmer, less dense parts rise and cooler, denser parts sink, creating continuous currents that distribute heat
What energy transfer is in action when an electrical car starts?
chemical - electrical - mechanical
what is nuclear energy
nuclear energy's fission or fusion, fission's splitting atoms apart fusion is fusing them.
if there is 2 molecules in an object;, one is 3, and the last is 7, what is the total thermal energy of the object?
10
After two objects come into contact, when does their temperature stop chagning?
what is conduction?
the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
what type of energy transfer is in action when a match is lit up?
chemical - thermal - light
what is solar energy
radient light and heat from the sun that is captured to convert into usable thermal and electrical energy.
if there is 5 molecules in an object; one is 4, one is 3,one is 4, one is 8, and the last is 6, what is the total thermal energy of the object?
25
Energy cannot be _________ or ___________, only _____________
created, destroyed, transferred
what is molecules?
a group of two or more atoms chemically bonded together
what type of energy transfer when you eat a banana?
chemical - kinetic - thermal
How is nuclear energy produced?
Fusion and Fission
if there are 3 molecules in an object; one is 4, one is 2, and the last is 6, what is the temperature of the object?
4
Is energy transfer always efficient?
what is the law of conservation?
energy cannot be created or destroyed, only transformed from one form to another