Dr. Jie Zou PHY 1151G Department of Physics1 Chapter 16 Temperature and Heat (Cont.)

Slides:

Advertisements

Similar presentations

Chapter 6 Thermal Energy

Advertisements

Three Types of Heat Transfer

The Nature of Heat 6.2 Heat Heat is thermal energy that flows from something at a higher temperature to something at a lower temperature. Heat is a form.

Chapter 6 Section 2 Quiz Review

Chapter 11 Energy in Thermal Processes Heat and Internal Energy

Thermal Energy.

Heat and Heat Transfer. Scales of Measurement Celsius scale – based on where water freezes (0  C) and where water boils (100  C) Kelvin scale – based.

Energy in Thermal Processes

Chapter 9: Heat.

Dr. Jie Zou PHY 1151G Department of Physics1 Chapter 17 Phases and Phase Changes.

Dr. Jie Zou PHY 1151G Department of Physics 1 Chapter 18 The Laws of Thermodynamics The zeroth law of thermodynamics The first law of thermodynamics The.

Energy Transfer Chapter 10.2.

Energy in Earth’s Atmosphere

Unit 12: Temperature and Thermal Energy Thermodynamics is the study of heat transformations into other forms of energy. ◦ Used to develop higher performance.

Chapter Everything is made of particles 2. These particles move 3. Hot things move faster than cold things.

Chapter 14.2 – Energy Transfer

Physics Unit 6: Thermodynamics

Temperature is a measure of the average kinetic energy of the particles in a substance. It is the kinetic energy of a typical particle.

Thermodynamics. Thermodynamics – The study of heat transformation. Temperature – A measure of the average kinetic energy of the particles in an object.average.

Thermal Flow If you can’t stand the heat. Temperature  As we know Temperature is the average kinetic energy of the molecules. As they bounce around they.

14 Heat Homework: Problems: 3, 5, 13, 21, 33, 47, 49. Internal Energy

Heat Transfer What do you know about heat transfer?

Additional Notes. What is the total energy of motion in the molecules of a substance? Thermal Energy.

Thermal Energy and Heat thermal energy the total kinetic and potential energy of the atoms or molecules of a substance heat the transfer of energy from.

Heat Transfer Conduction, Convection, Radiation. Three Main Processes of Heat Transfer  Conduction  Convection  Radiation.

You did work against friction, where did the energy go?

Unit 6. Temperature Temperature – A measure of the average kinetic energy of the particles in an object (how hot or cold). There are three common temperature.

Thermal Energy Thermal Energy: The total internal Energy Internal Energy: The sum of the kinetic and potential energies of the internal motion of particles.

EARTH’S ENERGY. Energy from the Sun Nearly all of Earth’s atmosphere energy comes from the sun as electromagnetic waves. Most of the energy comes from.

Heat Transfer Thermal energy Temperature is the average amount of energy of motion of each particle of a substance. Thermal energy is the total energy.

1 11 Heat Homework: 1, 3, 4, 5, 6, 9, 11, 21, 23, 54, 63, 64.

Temperature and Heat Temperature & Scales Thermometry Thermal Expansion Heat and Internal Energy Heat Transfer Heat and Temperature Change, Specific.

Thermal Energy Chapter 12 Physics Principles and Problems Zitzewitz, Elliot, Haase, Harper, Herzog, Nelson, Nelson, Schuler and Zorn McGraw Hill, 2005.

Chapter 9 Heat.

February 22 nd, 2016 Distinguish between 3 methods of transferring heat. Define Specific Heat Calculate heat transfer.

Energy Transfer Methods of energy Transfer Three ways energy is transferred: 1. Conduction- occurs between objects in direct contact. a. Objects.

Atmospheric Heating Radiation Conduction Convection.

Standards 3: Thermal Energy How Heat Moves  How heat energy transfers through solid.  By direct contact from HOT objects to COLD objects.

Thermal Energy & Heat.

In this chapter you will:  Learn how temperature relates to the potential and kinetic energies of atoms and molecules.  Distinguish heat from work. 

Heat Energy. Heat is energy caused by the internal motion of molecules of matter Heat is energy caused by the internal motion of molecules of matter Heat.

Chapter 16 Temperature and Heat.  Definition of heat: Heat is the energy transferred between objects because of a temperature difference.  Objects are.

Radiation, Conduction, Convection

Conduction Convection Radiation

Heat Transfer Conduction Convection Radiation.

Heat and Heat Transfer Heat.

Chapter Section Convection and the Mantle

Heat Transfer Unit 11: Forces & Energy.

Radiation, Conduction, Convection

Lesson 3 Vocabulary Heating Earth’s Surface

The 1st Law of Thermodynamics

Energy in Earth’s Atmosphere

Temperature Chapter 10 Section 1.

Heat = Transfer of energy between objects that are at different temperatures Goes from the HIGHER temp. object to the LOWER temp. object.

Warm Up: Copy this slide in notes How does heat Move?

Thermal Energy.

Warm up: In your composition book.

Heat and the Conservation of Energy

All matter is made up of molecules and atoms

Calorimetry Conservation of thermal energy: Final Temperature: m1 m2

Thermal Energy.

Energy Flow in the Earth System

Heat and the Conservation of Energy

Presentation transcript:

Dr. Jie Zou PHY 1151G Department of Physics1 Chapter 16 Temperature and Heat (Cont.)

Dr. Jie Zou PHY 1151G Department of Physics2 Outline Heat Capacity Specific Heat Calorimetry Conduction, Convection, and Radiation

Dr. Jie Zou PHY 1151G Department of Physics3 Heat Capacity Heat capacity, C: Suppose we add the heat Q to a given object, and its temperature increases by the amount ∆T. The heat capacity, C, of this object is defined as C = Q/∆T. SI unit: J/K = J/Cº. The heat, Q, required for a given ∆T is Q = C ∆T. Sign conventions for Q: Q is positive if heat is added to a system. Q is negative if heat is removed from a system. The heat capacity C varies not only with the type of substance, but also with the amount of the substance.

Dr. Jie Zou PHY 1151G Department of Physics4 Specific Heat Specific heat, c: c = Q/(m ∆T). SI unit: J/(kg·K) = J/(kg·Cº) The specific heat, c, depends only on the substance, and not on the amount of the substance. For example: c water = 4186 J/(kg·K), c iron = 448 J/(kg·K), c lead = 128 J/(kg·K).

Dr. Jie Zou PHY 1151G Department of Physics5 Calorimetry Find the final temperature of the block and the water. (1) The final temperatures of the block and water are equal, since the system will be in thermal equilibrium. (2) The total energy of the system is conserved. The amount of heat lost by one object is equal to the heat gained by the other object in the system.

Dr. Jie Zou PHY 1151G Department of Physics6 Example 16-5 A kg block of metal with an initial temperature of 30.0 °C is dropped into a container holding 1.12 kg of water at 20.0 °C. If the final temperature of the block-water system is 20.4 °C, what is the specific heat of the metal?

Dr. Jie Zou PHY 1151G Department of Physics7 Conduction, Convection, and Radiation Three different ways of heat transfer: Conduction, Convection, and Radiation Examples Conduction: Hold one end of an iron nail in a flame. The heat enters the metal nail at the end that is kept in the flame and the heat is transmitted along the nail’s whole length through conduction. Convection: Heat transfer due to the actual motion of the fluid itself. Liquids and gases (fluids) transmit heat mainly by convection. Radiation: Energy from the sun passes through space and the Earth’s atmosphere by electromagnetic radiation.

Dr. Jie Zou PHY 1151G Department of Physics8 Homework Chapter 16, Page 529, Problems: #27, 33, 36.