Thermal Energy and Heat Transfer

Kate study flashcards

Conduction (1)

-Particles collide with particles of another substance causing the energy to move from one substance to the other

Convection Current (1)

-The circular motion of particles resulting from convection

Convection (2)

-Occurs only in fluids-liquids or gasses

-Temperature changes cause changes in the density of particles within the fluid

Radiation (2)

-The transfer of energy by electromagnetic waves

-The only form of heat transfer that does not require a medium

Atoms (2)

-The smallest unit of matter

-Elements on the periodic table are made of only one kind of atom

Molecules (3)

-Two or more atoms chemically combined through a bonding process

-Molecules do not keep the properties of the elements that build them, instead they are chemically unique

-Hydrogen and oxygen are both gasses but when two hydrogen atoms combine with one oxygen atom, we get a water molecule.

Thermal Energy (2)

-Is a measure of the average kinetic energy of all the particles in an object

-Does not get transferred, it is a characteristic of the object or system

Heat energy (4)

-The result of the movement of atoms and molecules

-Is transferred from the hotter object or substance to the colder object or substance

-The flow of energy because the difference in temperatures is called HEAT

The warm object will cool down, the cold object will heat up until they both reach the same temperature

The three types of heat transfer

1: Conduction

2: Convection

3: Radiation

Thermal Properties (How materials respond to heat) (2)

1: Conductors- Conducts heat well

2: Insulators- does not conduct heat well