Unit c - 2.2 heat vs temperature
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This document discusses heat, temperature, and different ways of measuring temperature. It explains that temperature is a measurement of the average kinetic energy of particles, with higher temperatures indicating more kinetic energy. Different types of thermometers, such as mercury thermometers and infrared thermometers, are used to measure temperature. Heat is the transfer of energy between substances due to differences in temperature, always flowing from hotter to colder substances. The document also distinguishes between thermal energy, heat, and temperature.
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Heat and temp BSND-2A
1. Heat is the transfer of thermal energy between objects due to a temperature difference, while temperature is a measure of the average kinetic energy of particles.
2. Specific heat capacity is the amount of heat required to change the temperature of a substance by 1°C, with water having a higher specific heat capacity than most materials.
3. Phase changes from solid to liquid or liquid to gas require heat in the form of latent heat without changing temperature.
Thermodynamics - Heat and Temperature
Heat and temperature are different concepts. Heat is a form of energy measured in Joules, while temperature is a measure of the average kinetic energy of particles measured in Kelvin or Celsius. Objects can contain various forms of energy including kinetic energy from motion and potential energy from forces between particles. Thermal equilibrium occurs when objects in contact reach the same temperature after heat transfer. Specific heat capacity is the amount of energy required to change an object's temperature and depends on the material. Phase changes from solid to liquid or liquid to gas require latent heat and occur when particles gain enough energy to overcome attractive forces.
temperature and heat
Here are some examples of situations where it would be important to slow the movement of energy:
- Insulating a home to keep it warm in winter and cool in summer.
- Packing food in insulated containers to keep it hot or cold during transport.
- Wearing insulating clothing like down jackets in cold weather.
- Using insulated mugs or bottles to keep drinks hot or cold.
heat and temperature
The document discusses heat, temperature, and the transfer of thermal energy. It defines heat as the flow of energy due to temperature differences and explains that temperature depends on the motion of particles in matter. All particles are constantly moving, with solids vibrating, liquids flowing, and gases moving freely. Temperature is measured in units like Celsius and Fahrenheit and represents the average kinetic energy of particles. Thermal energy can transfer between objects in three ways: conduction (direct contact), convection (movement of particles), and radiation (electromagnetic waves). The document provides examples of these processes and defines other related concepts like specific heat and thermal expansion.
Heat and temperature
The document discusses key concepts relating to temperature and heat, including:
- Temperature is a measure of the average kinetic energy of particles in an object. When matter is heated, its atoms and molecules move faster.
- Heat flows spontaneously from warmer to cooler objects due to differences in average particle kinetic energy. The energy that transfers between objects due to a temperature difference is called heat.
- Thermal equilibrium is reached when objects come to share a common temperature, with equal average kinetic energies per particle. A thermometer measures temperature by coming into thermal equilibrium with its surroundings.
Temperature and heat
This document discusses temperature, heat, and heat transfer. It defines temperature as the physical quantity that measures the degree of hotness of a body, with the SI unit being Kelvin. Heat is defined as the energy that naturally flows from a hot body to a cold body, with the SI unit being Joules. There are three methods of heat transfer: conduction through direct contact, convection through the movement of liquids and gases, and radiation through electromagnetic waves. The document provides examples of each and discusses using the heat capacity formula of Q=mcΔΘ to solve problems involving changing temperatures and heat quantities.
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1. The document discusses key concepts in heat and thermodynamics including temperature, heat transfer mechanisms, thermal expansion, and phase changes.
2. It provides examples of problems and their solutions involving concepts like specific heat, latent heat, temperature conversions, and heat transfer calculations.
3. The key heat transfer mechanisms of conduction, convection, and radiation are explained through examples of how they apply to insulating houses and minimizing energy costs.
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The document discusses key concepts related to heat and temperature including hot and cold, volume, mass and density, heat and temperature, how adding heat impacts molecular motion and causes objects to expand or change state through evaporation or condensation, and how heat energy flows. It defines terms like volume, mass, density, heat, and temperature and explains that adding heat increases molecular motion which can overcome molecular forces and result in changes to objects.
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Heat and temp BSND-2A
1. Heat is the transfer of thermal energy between objects due to a temperature difference, while temperature is a measure of the average kinetic energy of particles.
2. Specific heat capacity is the amount of heat required to change the temperature of a substance by 1°C, with water having a higher specific heat capacity than most materials.
3. Phase changes from solid to liquid or liquid to gas require heat in the form of latent heat without changing temperature.
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Heat and temperature are different concepts. Heat is a form of energy measured in Joules, while temperature is a measure of the average kinetic energy of particles measured in Kelvin or Celsius. Objects can contain various forms of energy including kinetic energy from motion and potential energy from forces between particles. Thermal equilibrium occurs when objects in contact reach the same temperature after heat transfer. Specific heat capacity is the amount of energy required to change an object's temperature and depends on the material. Phase changes from solid to liquid or liquid to gas require latent heat and occur when particles gain enough energy to overcome attractive forces.
temperature and heat
Here are some examples of situations where it would be important to slow the movement of energy:
- Insulating a home to keep it warm in winter and cool in summer.
- Packing food in insulated containers to keep it hot or cold during transport.
- Wearing insulating clothing like down jackets in cold weather.
- Using insulated mugs or bottles to keep drinks hot or cold.
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The document discusses heat, temperature, and the transfer of thermal energy. It defines heat as the flow of energy due to temperature differences and explains that temperature depends on the motion of particles in matter. All particles are constantly moving, with solids vibrating, liquids flowing, and gases moving freely. Temperature is measured in units like Celsius and Fahrenheit and represents the average kinetic energy of particles. Thermal energy can transfer between objects in three ways: conduction (direct contact), convection (movement of particles), and radiation (electromagnetic waves). The document provides examples of these processes and defines other related concepts like specific heat and thermal expansion.
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The document discusses key concepts relating to temperature and heat, including:
- Temperature is a measure of the average kinetic energy of particles in an object. When matter is heated, its atoms and molecules move faster.
- Heat flows spontaneously from warmer to cooler objects due to differences in average particle kinetic energy. The energy that transfers between objects due to a temperature difference is called heat.
- Thermal equilibrium is reached when objects come to share a common temperature, with equal average kinetic energies per particle. A thermometer measures temperature by coming into thermal equilibrium with its surroundings.
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This document discusses temperature, heat, and heat transfer. It defines temperature as the physical quantity that measures the degree of hotness of a body, with the SI unit being Kelvin. Heat is defined as the energy that naturally flows from a hot body to a cold body, with the SI unit being Joules. There are three methods of heat transfer: conduction through direct contact, convection through the movement of liquids and gases, and radiation through electromagnetic waves. The document provides examples of each and discusses using the heat capacity formula of Q=mcΔΘ to solve problems involving changing temperatures and heat quantities.
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“HEAT”
Heat is a form of energy that flows from warmer bodies to colder bodies.
It is viewed as a form of energy that is transferred from one body to another due to a difference in temperature.
The SI unit of heat is joule (J).
Common unit of heat is calorie.
CALORIE the amount of heat needed to change the temperature of one gram of water from the pressure of the atmosphere.
TEMPERATURE
LAYMAN’S TERM
- It is the degree of hotness or coldness of an object.
Molecular level
- A measure of the average kinetic energy of these molecules.
Based from our sensory experiences:
“Can we use our senses to determine temperature?”
THERMOMETER
TYPES OF THERMOMETER
The most common type of the thermometer.
THERMOCOUPLE
-two different metals (usually copper and iron) that are twisted together
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-a device (camera) that measures the amount of radiant energy given off by an object
TEMPERATURE SCALES
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The document discusses the three main types of heat transfer: conduction, convection, and radiation. It provides details on how each type occurs. Conduction involves the transfer of heat through direct contact of particles in solids. Convection involves the transfer of heat by the movement of fluids like gases and liquids. Radiation involves the transfer of heat by electromagnetic waves emitted by hot objects.
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Heat and temperature are often confused but refer to different concepts. Temperature is a measure of the average kinetic energy of molecular motion in a substance, while heat is the transfer of energy between objects due to a temperature difference. Several factors affect heat and temperature, including the movement of molecules. Common temperature scales include Celsius, Fahrenheit and Kelvin, and formulas can be used to convert between them. Proper use of thermometers allows accurate measurement of temperature.
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The document discusses various topics relating to heat. It defines heat as the total kinetic energy of molecules and explains how heat flows from hot to cold objects until equilibrium is reached. Heat is measured in calories, joules, or BTUs and depends on the mass and energy of particles. While heat is the total kinetic energy, temperature is a relative measure of particle speed. When substances are heated, their particles move faster and volume increases, making the substance less dense. The three main states of matter are solid, liquid, and gas. Heat of fusion and heat of vaporization refer to the energy required for phase changes. Heat transfer occurs through conduction, convection, and radiation.
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- Heat is the transfer of internal energy between objects due to a temperature difference. Temperature is a measure of the average kinetic energy of particles in an object.
- Specific heat is the amount of energy needed to raise the temperature of 1 gram of a substance by 1 degree Celsius and depends on the substance. The amount of heat transferred depends on the mass, specific heat, and change in temperature.
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- The three primary methods of heat transfer are conduction, convection, and radiation. Conduction involves direct contact, convection involves the transfer of heat by a liquid or gas, and radiation involves the transfer of heat through electromagnetic waves.
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The calculated specific heat capacity cL would be higher than the actual specific heat capacity c if heat loss is not negligible. This is because some of the electrical energy supplied is lost to the surroundings through heat loss, rather than being fully absorbed by the block. So a longer time t2 is required to raise the temperature by the same amount, resulting in an overestimation of c.
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Thermal energy is the kinetic energy of particles in a substance. It is measured by temperature and can be transferred between objects and spaces in three ways: conduction, convection, and radiation. Thermal energy always moves from warmer objects and areas to cooler ones until equilibrium is reached where both have the same temperature. Through conduction, thermal energy transfers when particles touch; convection occurs through the circulation of fluids; and radiation allows transfer through empty space.
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The document discusses key concepts relating to temperature, heat, and the transfer of energy. It explains that heat is the flow of energy from warmer objects to cooler objects due to temperature differences. Temperature is defined as the average kinetic energy of particles in an object, and is measured in units like Celsius and Fahrenheit. Heat is transferred between objects via three methods: conduction (direct contact), convection (movement of particles in fluids and gases), and radiation (electromagnetic waves).
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“HEAT”
Heat is a form of energy that flows from warmer bodies to colder bodies.
It is viewed as a form of energy that is transferred from one body to another due to a difference in temperature.
The SI unit of heat is joule (J).
Common unit of heat is calorie.
CALORIE the amount of heat needed to change the temperature of one gram of water from the pressure of the atmosphere.
TEMPERATURE
LAYMAN’S TERM
- It is the degree of hotness or coldness of an object.
Molecular level
- A measure of the average kinetic energy of these molecules.
Based from our sensory experiences:
“Can we use our senses to determine temperature?”
THERMOMETER
TYPES OF THERMOMETER
The most common type of the thermometer.
THERMOCOUPLE
-two different metals (usually copper and iron) that are twisted together
INFRARED THERMOGRAMS
-a device (camera) that measures the amount of radiant energy given off by an object
TEMPERATURE SCALES
TEMPERATURE SCALES
Heat transfer
The document discusses the three main types of heat transfer: conduction, convection, and radiation. It provides details on how each type occurs. Conduction involves the transfer of heat through direct contact of particles in solids. Convection involves the transfer of heat by the movement of fluids like gases and liquids. Radiation involves the transfer of heat by electromagnetic waves emitted by hot objects.
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This presentation covers heat, temperature, and the differences between them. It discusses various temperature scales including Celsius, Fahrenheit, and Kelvin. It explains heat transfer through conduction, convection, and radiation. Key sources of heat and temperature include the sun, combustion of fuels like coal, and solar energy. Heat is a form of energy transferred between objects due to temperature differences, while temperature is a measure of an object's kinetic energy. The relationship between heat and temperature can be calculated using the specific heat capacity, mass, and change in temperature in the equation: q=m×C×ΔT.
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Heat and temperature are often confused but refer to different concepts. Temperature is a measure of the average kinetic energy of molecular motion in a substance, while heat is the transfer of energy between objects due to a temperature difference. Several factors affect heat and temperature, including the movement of molecules. Common temperature scales include Celsius, Fahrenheit and Kelvin, and formulas can be used to convert between them. Proper use of thermometers allows accurate measurement of temperature.
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The document discusses various topics relating to heat. It defines heat as the total kinetic energy of molecules and explains how heat flows from hot to cold objects until equilibrium is reached. Heat is measured in calories, joules, or BTUs and depends on the mass and energy of particles. While heat is the total kinetic energy, temperature is a relative measure of particle speed. When substances are heated, their particles move faster and volume increases, making the substance less dense. The three main states of matter are solid, liquid, and gas. Heat of fusion and heat of vaporization refer to the energy required for phase changes. Heat transfer occurs through conduction, convection, and radiation.
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Heat transfer is the movement of heat energy from warmer objects to cooler ones. There are three main types of heat transfer: conduction (through direct contact of objects), convection (through the movement of fluids like air or water), and radiation (through electromagnetic waves without direct contact). Heat will continue to transfer until both objects reach the same temperature, with the rate of transfer increasing with a larger difference in temperatures.
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The document discusses temperature, heat, and thermal expansion. It explains that temperature is a measure of the average kinetic energy of particles in a substance, with hotter substances having particles that move faster. Heat is the transfer of energy from warmer objects to cooler ones due to temperature differences. When two substances at different temperatures come into contact, heat will flow from the warmer one to the cooler one until thermal equilibrium is reached and their temperatures equalize. The specific heat capacity of a substance determines how much heat is required to change its temperature by a given amount, with water having a particularly high specific heat capacity compared to other materials.
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- Heat is the transfer of internal energy between objects due to a temperature difference. Temperature is a measure of the average kinetic energy of particles in an object.
- Specific heat is the amount of energy needed to raise the temperature of 1 gram of a substance by 1 degree Celsius and depends on the substance. The amount of heat transferred depends on the mass, specific heat, and change in temperature.
- Common units for heat include joules, calories, kilocalories, and British Thermal Units (BTUs). Conversions between temperature scales like Celsius, Fahrenheit and Kelvin are also discussed.
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Thermal energy is the total energy of all the atoms and molecules in a substance and is related to how fast those molecules are moving. Temperature is a measure of the average kinetic energy of molecules. Heat is the transfer of thermal energy between substances due to a temperature difference, which will continue until thermal equilibrium is reached where the substances have the same temperature. Specific heat capacity is a measure of how much thermal energy a substance needs to gain or lose in order to change its temperature by one degree.
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This document defines key concepts related to heat transfer including:
- Heat is the transfer of energy between objects due to temperature differences and is measured in Joules.
- Temperature is determined by the motion of particles in a substance, with faster motion indicating a higher temperature.
- The three primary methods of heat transfer are conduction, convection, and radiation. Conduction involves direct contact, convection involves the transfer of heat by a liquid or gas, and radiation involves the transfer of heat through electromagnetic waves.
- Equations are provided to calculate heat transfer via conduction, convection, and radiation based on factors like thermal conductivity, heat transfer coefficient, surface area, and temperature differences.
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This document discusses key concepts in thermal physics including heat, temperature, specific heat capacity, and latent heat. It begins by defining heat as a form of energy and temperature as a measurement of how hot or cold something is. It explains that different materials require different amounts of heat to change temperature by the same amount due to differences in specific heat capacity. The document then discusses phase changes and how heat is required for changes of state, like melting and boiling, without a change in temperature due to the absorption of latent heat. It provides examples of calculating specific heat capacity and using the principle of conservation of energy to solve problems involving heat transfer.
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Heat is thermal energy transferred from a warmer body to a colder one. Temperature is the measure of the amount of heat in a body. There are three main ways heat transfers between objects: conduction through direct contact, convection through the movement of fluids like liquids and gases, and radiation through electromagnetic waves without contact. Heat causes changes in materials like changes of state between solids, liquids and gases, and changes in volume through expansion and contraction as materials heat up and cool down.
Thermal physics slides 2011 student part1
The calculated specific heat capacity cL would be higher than the actual specific heat capacity c if heat loss is not negligible. This is because some of the electrical energy supplied is lost to the surroundings through heat loss, rather than being fully absorbed by the block. So a longer time t2 is required to raise the temperature by the same amount, resulting in an overestimation of c.
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This document summarizes key concepts about temperature, heat transfer, and clinical thermometers. It defines common temperature scales (Celsius, Fahrenheit, Kelvin) and concepts like thermal expansion, heat, internal energy, specific heat capacity, phase changes, and latent heat. It describes different methods of heat transfer (conduction, convection, radiation). It outlines direct and indirect types of clinical thermometers, including liquid-in-glass, chemical dot matrix, digital, thermocouple, infrared thermometers and their uses.
Measurement and effects of heat
It's lesson no. 14 Measurement and effects of heat SSC board std 8th. it's very useful for teaching digitally. I hope it will help you a lot.
Thermal energy transfer notes without highlights
Thermal energy is the kinetic energy of particles in a substance. It is measured by temperature and can be transferred between objects and spaces in three ways: conduction, convection, and radiation. Thermal energy always moves from warmer objects and areas to cooler ones until equilibrium is reached where both have the same temperature. Through conduction, thermal energy transfers when particles touch; convection occurs through the circulation of fluids; and radiation allows transfer through empty space.
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Temp and Time.ppt
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Temp and Time.ppt
The document discusses various topics related to temperature and time measurement:
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Unit c heattemperaturenotes
This document discusses heat and temperature. It defines heat as a form of energy that flows from hot to cold objects. Temperature is defined as a measurement of how hot or cold something is, which is related to the average kinetic energy of its particles. The document also discusses states of matter, how heat affects the movement and volume of particles, and the different methods of heat transfer - conduction, convection, and radiation. It provides examples of natural and renewable sources of thermal energy as well as alternatives to fossil fuels for heating systems.
Heat
This document discusses heat and thermal energy. It covers topics like the three methods of heat transfer (conduction, convection, and radiation), temperature scales (Celsius and Kelvin), phase changes, heat expansion, and devices used to measure heat like thermometers and calorimeters. Key terms discussed include kinetic energy, heat, temperature, specific heat, internal energy, and heat expansion. Measurement units like calories and joules are also introduced.
Heat energy
What is HEAT?
Form of energy and measured in JOULES
Particles move about more and take up more room if heated – this is why things expand if heated
It is also why substances change from: solids liquids gases when heated
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Unit c - 2.2 heat vs temperature
- 1. 2.2 Heat and Temperature
- 2. What is Temperature Really? • It is all around us – when we wake up in the morning, in the classroom, outside, and it goes on ▫ Ex. Weather Channel • We use many different tools to measure temperature.
- 3. Thermometer • Many different kinds and uses…main examples: Weather outside Body temperature • Here are some commonly used ones today:
- 4. Galileo’s Thermometer • glass vials float to the top or sink to bottom of tube based on temperature of water in tube
- 5. Mercury Thermometer • The liquid in the tubes goes up and down based on temperature
- 6. Infrared Thermometer • Measures body temperature of a person using a little tip inserted into the ear
- 7. Heat Energy and Temperature • Heat energy transfers from HOT substances to COLD ones….Always. • When we take the temperature of anything we are measure the amount of heat energy. • The higher the heat energy the higher the temperature • Ex. Temperature on a winter day
- 9. Kinetic Energy and Thermal Energy • Kinetic – Amount of movement of the particles Higher temperature more kinetic energy • Thermal – Total amount of kinetic energy caused by all particle movement
- 10. Heat • Energy that transfers from one substance to another • Ex. Water being boiled to make tea Heat is being transferred to make the water hotter • Ex. Chocolate being melted on the stove Heat from stove is transferred to the colder chocolate
- 11. • When 40C water mixes with 60C water the result is…………50C water!!! HEAT TRANSFER
- 12. Heat Transfer • When two substances transfer heat without any electronic assistance they will warm up/ cool down equally. • Ex. 40C water mixed with 60C water = 50C water ▫ 40C + 10C = 50 60C – 10C = 50C ▫ BOTH GAIN/LOSE 10C of temperature
- 13. Difference Between Them • Thermal Energy – TOTAL kinetic energy • Heat – the energy that transfers from a particles with higher movement to lower movement (kinetic energy) • Temperature is just a measurement of kinetic energy (hot or cold)
- 14. • This leads us to the next section of Conduction, Convection, and Radiation. ▫ We will be building our own thermoses to protect and ice cube from heat ▫ More details to come!!!