Science April 2018 Thermal Energy and Heat
Terms in this set (31)
A measure of how hot or cold something is compared to a reference point.
Average kinetic energy
Temperature is a measure of the __ __ __ of the particles in an object.
US uses this scale to measure temperature.
Scale most countries use to measure temperature.
Scale many scientists use to measure temperature.
A temperature change of 1 kelvin is the same as a change of...
Zero kelvins:lowest temperature possible:-273°C.
Do all objects at the same temperature have the same amount of energy?
Are temperature, thermal energy, and heat the same thing?
The total energy of all the particles in an object.
Temperature, number of particles, how the particles are arranged
What three factors decide thermal energy?
The transfer of thermal energy from a warmer object to a cooler object.
What is heat measured in?
Conduction, convection, and radiation
Heat is transferred from warmer areas to cooler areas by what three methods?
A type of heat transfer that occurs only in fluids.
A current created by heated air particles spreading out and rising, leaving a space for cooler air to flow into, heat up, and repeat.
The transfer of energy by electromagnetic waves that do not require matter.
Transfers heat from one particle of matter to another within an object or between two objects.
Its thermal properties
What determines how an object will respond to heat?
Conduct heat well
Some materials ___ __ _, while others do not.
A material that conducts heat well, AKA metal.
In a good conductor, heat...into and out of them.
Materials that do not conduct heat well.
Its chemical makeup
The amount of heat required to raise the temperature of an object depends on...
True or False:To change the temperatures of different objects by the same amount, different amounts of thermal energy are required.
The amount of energy required to raise the temperature of 1kg of a material by 1 kelvin.
Joules per kilogram-kelvin
What is specific heat measured in?
___ specific heat=higher maximum thermal energy absorbed
What is the formula for energy change?
The expanding of matter when it is heated.
As matter cools, what does it usually do?