Ch. 5 Sec 1 Flashcards
Thermal Expansion
Increase in volume of an object due to a higher temp
Kinetic energy
the energy an object has due to its motion
3 statements Kinetic Theory of Matter
- All matter is composed of small particles called atoms.
- The atoms in matter are in constant, random motion.
- The atoms in matter are colliding into one another transferring energy.
Kinetic Theory of Matter
an explanation of how atoms in matter move/act/behave.
Temperature
the measure of average Kinetic energy of the particles/atoms in an object or matter
Absolute Zero
a theoretical temperture at which all particle motion in matter would stop
Thermal Energy
the sum of kinetic and potential energy in a object.
What does thermal energy depend on
the temperature, mass, and type of material of an object.
the formula for the change in Thermal energy
Q=m(Tf-Ti)*C, C-specific heat, m-mass, and is measured in Joules
Heat
the energy that is transferred between objects due to temperature differences between those objects
Specific Heat
the amount of energy needed to change the temperature of 1 Kg of a substance by 1C
Coolant
a substance that can absorb a lot of thermal energy with little change in temperature
Thermal Equilibrium
When 2 or more objects of different temperatures come in contact with one another, energy will be transferred from high to low until the objects reach the same temperature
Calorie
a unit used to express energy of heat.
How many Joules is in a calorie
4,184
