THERMODYNAMICS

_ a measure of the average value of the kinetic energy of the particles in an object. Heat energy Cold energy Temperature Thermal energy that flows from something at a higher temperature to something at a lower temperature is... temperature heat kinetic energy The amount of heat a substance needs to raise the temperature of 1 kg of that substance by 1°C is... moderate heat bonding heat specific heat Which substances in the table takes the longest time to heat up? (Which ones has the highest specific heat?) glass and water wood and iron water and wood What is the formula for calculating specific heat? Q = m x ΔT x c J = m x ΔT x c c = m x ΔT x Q The device used to find the specific heat of a material is a--- calorimeter thermometer calculator The ways in which thermal energy is transferred are: conduction and convection only convection and radiation only conduction, convection and radiation _ is the type of thermal energy transfer that occurs between the particles within a substance or between two substances bumping into each other and transferring kinetic energy. Conduction Convection Radiation _ is the transfer of thermal energy in a fluid by the movement of warmer and cooler fluids from one placed to another. Conduction Convection Radiation _ is the transfer of energy by electromagnetic waves. Energy is carried through solids, liquids, and gases. Conduction Convection Radiation Thermodynamics is the study of the relationship among thermal energy, _ and _. insulators, conductors heat, energy heat, work What are the units used to calculate specific heat? Select the correct unit used for calculating specific heat. Specific Heat Symbols Units Q (thermal energy) J m (mass) kg ΔT (change in temperature) °C or K Cp ( specific heat) J x °C The law of conservation of energy is directly related to... the first law of thermodynamics the second law of thermodynamics the third law of thermodynamics The purpose of designing a heat engine is to produce.. thermal energy mechanical work kinetic energy Engineers are concerned with designing engines with a high specific heat capacity hot reservoir capacity ideal efficiency An engine with a hot reservoir of 1500 K and a cold reservoir of 500 K has an ideal efficiency of 67 % 50 % 75% What are the descriptions and units used to calculate thermal energy? Use the following terms to label the formula. MAKE SURE TO WRITE THEM AS THEY ARE WRITTEN BELOW.specificheat (J x °C )thermal energy (J)mass (kg)change in temperature Tf-Ti (°C or K) thermal energy (J) mass (kg) specific heat (J x °C) change in temperature Tf-Ti (°C or K) Which of the following best explains the scenario below?On a summer morning, John walks barefoot across his paved driveway with no problem. However, later that afternoon he steps barefoot onto the same driveway and must quickly run off because the bottoms of his feet feel like they are burning. As the temperature increased during the day, the particles in the pavement moved slower and the thermal energy increased. As the temperature increased during the day, the particles in the pavement moved slower and the thermal energy decreased. As the temperature increased during the day, the particles in the pavement moved faster and the thermal energy increased. As the temperature increased during the day, the particles in the pavement moved faster and the thermal energy decreased. Choose the following materials that would make good conductors. Copper Glass Plastic Sweatshirt Gold Wood Rubber Aluminum You and your friend are walking barefoot on the beach on an extremely hot day. You feel your feet becoming very hot. What explanation would you give to your friend as to why this is happening? I would tell my friend that our feet are hot because the heat is RADIATING from the sand to the bottom of our feet. I would tell my friend that our feet are hot because the RADIATION from the Sun is directly hitting our feet and warming them. I would tell my friend that our feet are hot because the contact between our feet and the sand is trapping the heat. Choose the following materials that would make good insulators. Copper Glass Plastic Sweatshirt Gold Wood Rubber Aluminum Match the terms to their related expressions Entropy Level of disorder in a system Second law of thermodynamics Heat flows from hot to cold Absolute zero No motion of particles Heat Engine Mechanical work Degrees Celsius Kelvin - 273 Kelvin Celsius + 273