Presentation is loading. Please wait.

Presentation is loading. Please wait.

H EAT AND T EMPERATURE Its getting hot in here!. W HAT IS HEAT ? Heat: Heat: Energy due to temperature, the total energy of the random molecular motion.

Published byMadeline Neal Modified over 8 years ago

Similar presentations

Presentation on theme: "H EAT AND T EMPERATURE Its getting hot in here!. W HAT IS HEAT ? Heat: Heat: Energy due to temperature, the total energy of the random molecular motion."— Presentation transcript:

1 H EAT AND T EMPERATURE Its getting hot in here!

2 W HAT IS HEAT ? Heat: Heat: Energy due to temperature, the total energy of the random molecular motion contained in matter; Thermal energy Energy Energy : The ability to do work or produce heat Joule (J) – SI unit of energy (heat) Law of Conservation of Energy: Energy can be converted from one form to another but can be neither created nor destroyed

3 W HAT IS T EMPERATURE ? Temperature = a measure of the average kinetic energy of atoms or molecules (particles) in an object Kinetic energy = the energy of motion Three Temperature Scales: Fahrenheit Scale = °F Celsius Scale = °C Kelvin Scale = K

4 T EMPERATURE S CALES Fahrenheit Scale = a temperature scale with 180 degrees between the freezing pt (32 °F) and the boiling pt of water (212 °F) Celsius Scale = a temperature scale with 100 degrees between the freezing pt (0 °C) and the boiling pt of water (100 °C)

5 T EMPERATURE SCALES CONT ’ Kelvin Scale : a temperature scale that starts at absolute zero and has the same size degrees as Celsius scale Absolute Zero: the lowest possible temp.; the energy of molecular motion is zero; 0 K

6 T HREE C OMMON T EMP. S CALES

7 T EMPERATURE S CALE C ONVERSIONS Converting Between Fahrenheit and Celsius: °F = 9/5 °C + 32 °C = 5/9(°F - 32) Converting Between Kelvin and Celsius K = °C + 273 °C = K – 273 * there can never be a negative Kelvin temperature!!

8 E XAMPLES : 1. Convert 45 °F to degrees Celsius. °C = 5/9(°F -32) = 5/9(45°F - 32) = 5/9(13) = 7.2 °C *Note parentheses = subtract first, then multiply!

9 E XAMPLES C ONT ’ 2. Convert 157 °C to degrees Fahrenheit. °F = 9/5 °C + 32 = 9/5 (157 °C) + 32 = 283+ 32 = 315°F *Note – no parentheses = multiply first, then add!

10 E XAMPLES C ONT ’ Convert 459 K to °C. °C = K – 273 = 459K -273 = 186 °C Celsius is always lower! Convert 15°C to Kelvin. K = °C + 273 = 15°C + 273 = 288 K Kelvin is always higher!

11 C ONVERTING K ELVIN TO F AHRENHEIT Two step problems: K  °C then °C  °F Convert 238 K to °F. °C = 238K - 273 = -35 °C °F = 9/5 (-35 °C) + 32 = -31 °F

12 C ONVERTING F AHRENHEIT TO K ELVIN Two step problems: °F  °C then °C  K Convert 98.6°F to Kelvin. °C = 5/9(98.6°F -32) = 37.0 °C K = 37.0°C + 273 = 310.0 K

13

Download ppt "H EAT AND T EMPERATURE Its getting hot in here!. W HAT IS HEAT ? Heat: Heat: Energy due to temperature, the total energy of the random molecular motion."

Similar presentations

MEASURING THE MOVEMENT OF MOLECULES

MEASURING THE MOVEMENT OF MOLECULES
Thermal Energy and Temperature

Thermal Energy and Temperature
Do Now Give an example for each of the following energy conversions. 1.Electrical → Thermal 2.Chemical → Mechanical 3.Electrical → Mechanical 4.Mechanical.

Do Now Give an example for each of the following energy conversions. 1.Electrical → Thermal 2.Chemical → Mechanical 3.Electrical → Mechanical 4.Mechanical.
Bell work The temperature of boiling water is 100° on the Celsius scale and 212° on the Fahrenheit scale. Look at each of the following temperatures and.

Bell work The temperature of boiling water is 100° on the Celsius scale and 212° on the Fahrenheit scale. Look at each of the following temperatures and.
Temperature and Thermal Energy: Part 1 Physics In this lesson, we will discuss the following: Temperature Absolute Zero Thermal Energy.

Temperature and Thermal Energy: Part 1 Physics In this lesson, we will discuss the following: Temperature Absolute Zero Thermal Energy.
Kinetic Energy and Kelvin Temperature BY: MELVIN G. FLORES East Gadsden High School.

Kinetic Energy and Kelvin Temperature BY: MELVIN G. FLORES East Gadsden High School.
Chapter 6: Thermal Energy. LEARNING GOALS  Define temperature.  Explain how thermal energy depends on temperature.  Explain how thermal energy and.

Chapter 6: Thermal Energy. LEARNING GOALS  Define temperature.  Explain how thermal energy depends on temperature.  Explain how thermal energy and.
Energy Unit Review.

Energy Unit Review.
Temperature. Temperature – measure of the average kinetic energy (energy of motion) of atoms or molecules  Temperature is an average of molecule/atom.

Temperature. Temperature – measure of the average kinetic energy (energy of motion) of atoms or molecules  Temperature is an average of molecule/atom.
Temperature Section1. Temperature Scales  Fahrenheit ( ◦ F )  Celsius ( ◦ C )  Kelvin ( K )

Temperature Section1. Temperature Scales  Fahrenheit ( ◦ F )  Celsius ( ◦ C )  Kelvin ( K )
Introduction to Physical Science Monday, Wednesday, Thursday Tom Burbine

Introduction to Physical Science Monday, Wednesday, Thursday Tom Burbine
Energy Kinetic energy = energy of motion. Energy Potential energy = stored energy 1. energy of position due to gravity.

Energy Kinetic energy = energy of motion. Energy Potential energy = stored energy 1. energy of position due to gravity.
Heat The motion of the particles of matter. Heat Transfer Heat flows from an area of high heat to an area low in heat. Heat flows from an area of high.

Heat The motion of the particles of matter. Heat Transfer Heat flows from an area of high heat to an area low in heat. Heat flows from an area of high.
Thermodynamics Chapter 10 ~Energy. Intro Most natural events involve a decrease in total energy and an increase in disorder. The energy that was “lost”

Thermodynamics Chapter 10 ~Energy. Intro Most natural events involve a decrease in total energy and an increase in disorder. The energy that was “lost”
Heat and Temperature. Temperature Objective  Define temperature in terms of the average kinetic energy of atoms or molecules  Convert temperature readings.

Heat and Temperature. Temperature Objective  Define temperature in terms of the average kinetic energy of atoms or molecules  Convert temperature readings.
Thermal Energy.

Thermal Energy.
Energy. Energy The capacity to do some kind of work. The capacity to do some kind of work. Involved when there is a change in matter Involved when there.

Energy. Energy The capacity to do some kind of work. The capacity to do some kind of work. Involved when there is a change in matter Involved when there.
Heat and TemperatureSection 1 SPS7.c Determine the heat capacity of a substance using mass, specific heat, and temperature.

Heat and TemperatureSection 1 SPS7.c Determine the heat capacity of a substance using mass, specific heat, and temperature.
Temperature v. Heat. Celsius & Kelvin Temperature Scales Boiling point of water Freezing point of water Absolute zero Celsius 100 Celsius degrees 100.

Temperature v. Heat. Celsius & Kelvin Temperature Scales Boiling point of water Freezing point of water Absolute zero Celsius 100 Celsius degrees 100.
Fahrenheit, Celsius & Kelvin. Temperature  Is a measure of how hot or cold an object is compared to another object.  Indicates that heat flows from.

Fahrenheit, Celsius & Kelvin. Temperature  Is a measure of how hot or cold an object is compared to another object.  Indicates that heat flows from.

Similar presentations

Ads by Google