Temperature, Thermal Energy, and Heat Ms. De Los Rios 7th Grade

Energy Transformations and Conservation Forms of Energy Many objects in this restaurant have more than one form of energy. Find three objects.

Energy Transformations and Conservation Multiple Transformations A series of energy transformations must occur for you to ride your bike. What are the forms of energy involved in each transformation?

Energy Transformations and Conservation All Wound Up We can think of the model plane shown as a system. Energy transformations within the system help the plane to fly. What is the correct answer in each of the boxes?

Vocabulary 10.2 Temperature- is a measure of how hot or cold something is compared to a reference point (__________ point, ________ point) Fahrenheit Scale- the temp. scale on which water freezes at 32 degrees F. and boils at 212 degrees F. Celsius Scale- The temp. scale on which water freezes at 0 degrees C. and boils at 100 degrees C. Kelvin Scale- The temp. scale on which zero is the temp. at which no more energy can be removed from matter. Absolute Zero- the temp. at which no more energy can be removed from matter. Heat- The transfer of thermal energy from a warmer object to a cooler object.

Temperature, Thermal Energy, and Heat pg. All moving objects have __________ energy. Matter is made of particles (______ & ___________) that are always moving as well, therefore, they have _________ energy. Temperature- The measure of the average kinetic energy of the particles of a substance. As an object heats up, its particles move faster. As a result, both the average kinetic energy of the particles and the temperature increase.

Temperature, Thermal Energy, and Heat pg. 357 There are three common scales for measuring temperature: Fahrenheit scale, Celsius scale, Kelvin scale In the United States, the Fahrenheit scale is most common; water freezes at 32°F and boils at 212°F. Most other countries use the Celsius scale; water freezes at 0°C and boils at 100°C. Celsius and Fahrenheit is divided into degrees. Scientists usually use either the Celsius scale or the Kelvin scale. The Kelvin scale is divided into kelvins (K). A temperature change of 1 K is the same temperature change as 1°C. Absolute zero is the lowest temperature possible; it is 0 K. At absolute zero, the kinetic energy of individual particles is zero.

Anders Celsius Andre Celsius was born in Uppsala, Sweden, 27 November 1701; and died in Uppsala, 25 April 1744. He studied astronomy, mathematics, and experimental physics. He was a university professor. When Anders Celsius invented the Celsius scale, he had 100°C as the freezing point of water and 0°C as its boiling point. Resource: http://www.encyclopedia.com/topic/Anders_Celsius.aspx

How is Thermal Energy Different from Temperature? Temperature, thermal energy, and heat are closely related, but they are not the same thing. Thermal energy is the total energy of all the particles in an object. Thermal energy depends on the temperature of an object, the number of particles in the object, and how those particles are arranged. Thermal energy can transfer from one object to another; it always moves from a warmer object to a cooler object. Heat is the transfer of thermal energy from a warmer object to a cooler object. Heat is measured in the unit of energy—joules.

Temperature, Thermal Energy, and Heat Temperature Scales The chart shows a weather report, but it does not identify the temperature scale. What would one of the temperatures be in Celsius?

Temperature, Thermal Energy, and Heat The total amount of thermal energy in an object depends on its temperature and how many particles it contains. In the top two diagrams, which chicken pot pie contains more thermal energy? How should the bottom diagram be completed to show three pies with more thermal energy than the first?