Temperature, Thermal Energy & Heat You have already began the study cycle by “Previewing” the material and “Attending” class

Thermal Energy Depends on two factors Mass Temperature

Mass What has greater thermal energy? A match or this ice sculpture?

Mass What has greater thermal energy? The ice sculpture because it has more particles within it.

Temperature Things we have to remember: Everything is made of particles Particles have a certain amount of motion  less motion - solid, more motion – liquid, greatest amount of motion – gas Because particles are moving they have Kinetic Energy (KE) Which have the greatest KE?

KE and Temperature How are temperature and KE related? As the KE increases the temperature ______________________. As the KE decreases the temperature ______________________.

KE and Temperature How are temperature and KE related? As the KE increases the temperature INCREASES. As the KE decreases the temperature DECREASES. Temperature and KE have a direct relationship

Direct relation of KE and Temp “Temperature is a measure of how hot or cold something is; specifically, a measure of the average kinetic energy of the particles in an object, which is a type of energy associated with motion.” Summarize the above statement https://study.com/academy/lesson/what-is-temperature- definition-lesson-quiz.html

Transfer of Thermal Energy AKA Heat Room Temp 23 degrees Celsius (approx 73 degrees Fahrenheit) Chilled Butter 2 degrees Celsius (approx 35 degrees Fahrenheit) So which particles are moving faster? The butter or the air?

Transfer of Thermal Energy AKA Heat The transfer of thermal energy is known as HEAT. Heat is transferred in one direction from objects Hot  Cold We can also say More energy to less energy

Transfer of Thermal Energy AKA Heat The transfer of thermal energy is known as HEAT. Heat is transferred in one direction from objects Hot  Cold We can also say More energy to less energy Heat will be transferred until both objects are the same temperature

Transfer of Thermal Energy AKA Heat Room Temp 23 degrees Celsius (approx 73 degrees Fahrenheit) Chilled Butter 2 degrees Celsius (approx 35 degrees Fahrenheit) So which particles are moving faster? The butter or the air? The air particles are moving faster and bump into the the slow moving butter particles The air particles energy is transferred to the slow moving butter particles As the butter particles gain energy it increases in temperature

So when do particles have NO Kinetic Energy? Particles have no KE at absolute zero 0 degrees Kelvin -273 degrees Celsius -459 degrees Fahrenheit NO PARTICLE MOVEMENT

Study Cycle Review Study Test