Transfer of Energy Energy Transfer Energy is transferred
![Transfer of Energy Transfer of Energy](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-1.jpg)
![Energy Transfer • Energy is transferred from hotter object to colder object • Examples? Energy Transfer • Energy is transferred from hotter object to colder object • Examples?](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-2.jpg)
![Conduction • Stir your hot soup with a metal spoon • Pretty soon you Conduction • Stir your hot soup with a metal spoon • Pretty soon you](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-3.jpg)
![Conduction • Transfer E as heat between particles in direct contact • Example – Conduction • Transfer E as heat between particles in direct contact • Example –](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-4.jpg)
![Conduction • For example, a spoon in a cup of hot soup becomes warmer Conduction • For example, a spoon in a cup of hot soup becomes warmer](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-5.jpg)
![Conduction Conduction](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-6.jpg)
![Conduction Example • Put your hand on the desk. – How does it feel? Conduction Example • Put your hand on the desk. – How does it feel?](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-7.jpg)
![Convection • Energy transfer through movement of fluids at different temperatures (fluids liquids and Convection • Energy transfer through movement of fluids at different temperatures (fluids liquids and](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-8.jpg)
![Convection • Convection current – flow of fluid due to heated expansion followed by Convection • Convection current – flow of fluid due to heated expansion followed by](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-9.jpg)
![Convection • You can hold your fingers beside the candle flame without harm, but Convection • You can hold your fingers beside the candle flame without harm, but](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-10.jpg)
![Convection Examples • Water…boiling – What is happening? • Hot air popcorn – What Convection Examples • Water…boiling – What is happening? • Hot air popcorn – What](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-11.jpg)
![Convection Convection](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-12.jpg)
![Convection • Explains why breezes come from the ocean in the day and from Convection • Explains why breezes come from the ocean in the day and from](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-13.jpg)
![Radiation • Transfer of E by electromagnetic waves • No movement of matter – Radiation • Transfer of E by electromagnetic waves • No movement of matter –](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-14.jpg)
![Radiation • Radiation can be absorbed and emitted • Color – Summer day: wear Radiation • Radiation can be absorbed and emitted • Color – Summer day: wear](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-15.jpg)
![Radiation Example • Microwave Popcorn – The kernels are heated by the radiation in Radiation Example • Microwave Popcorn – The kernels are heated by the radiation in](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-16.jpg)
![Radiation • Interior of a car on a sunny day • Sunlight comes in Radiation • Interior of a car on a sunny day • Sunlight comes in](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-17.jpg)
![Radiation • Radiation: Electromagnetic waves that directly transport ENERGY through space • Sunlight is Radiation • Radiation: Electromagnetic waves that directly transport ENERGY through space • Sunlight is](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-18.jpg)
![What type of heat transfer is involved? • Heating a room with a fireplace What type of heat transfer is involved? • Heating a room with a fireplace](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-19.jpg)
![Let’s Review • http: //www. quia. com/pop/10875. html • BBC Bytesize http: //www. bbc. Let’s Review • http: //www. quia. com/pop/10875. html • BBC Bytesize http: //www. bbc.](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-20.jpg)
- Slides: 20
![Transfer of Energy Transfer of Energy](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-1.jpg)
Transfer of Energy
![Energy Transfer Energy is transferred from hotter object to colder object Examples Energy Transfer • Energy is transferred from hotter object to colder object • Examples?](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-2.jpg)
Energy Transfer • Energy is transferred from hotter object to colder object • Examples? – Cooking pasta – Making ice – Making popcorn – Roasting marshmallows
![Conduction Stir your hot soup with a metal spoon Pretty soon you Conduction • Stir your hot soup with a metal spoon • Pretty soon you](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-3.jpg)
Conduction • Stir your hot soup with a metal spoon • Pretty soon you need a pot holder because the end of the spoon you are holding gets hot • This is heat transfer by conduction • Energy travels up the spoon from the end in the hot soup to the end in your hand
![Conduction Transfer E as heat between particles in direct contact Example Conduction • Transfer E as heat between particles in direct contact • Example –](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-4.jpg)
Conduction • Transfer E as heat between particles in direct contact • Example – Roasting marshmallow with wire – Air molecules collide with wire • Transfer energy to wire • Particles in wire move faster, have more E • E then transfer to hand, detect warmth
![Conduction For example a spoon in a cup of hot soup becomes warmer Conduction • For example, a spoon in a cup of hot soup becomes warmer](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-5.jpg)
Conduction • For example, a spoon in a cup of hot soup becomes warmer because the heat from the soup is conducted along the spoon. • Fun fact: Have you ever noticed that metals tend to feel cold? Believe it or not, they are not colder! They only feel colder because they conduct heat away from your hand. You perceive the heat that is leaving your hand as cold.
![Conduction Conduction](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-6.jpg)
Conduction
![Conduction Example Put your hand on the desk How does it feel Conduction Example • Put your hand on the desk. – How does it feel?](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-7.jpg)
Conduction Example • Put your hand on the desk. – How does it feel? – Is it colder or is the heat transferring to your hand through CONDUCTION? • Popcorn in a pot – The heat is transferred by direct contact from the pan, to the oil, to the kernels of popcorn.
![Convection Energy transfer through movement of fluids at different temperatures fluids liquids and Convection • Energy transfer through movement of fluids at different temperatures (fluids liquids and](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-8.jpg)
Convection • Energy transfer through movement of fluids at different temperatures (fluids liquids and gases) • Examples – Camp fire • See soot, embers rise & swirl • Rise upwards – warm air expands – Why?
![Convection Convection current flow of fluid due to heated expansion followed by Convection • Convection current – flow of fluid due to heated expansion followed by](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-9.jpg)
Convection • Convection current – flow of fluid due to heated expansion followed by cooling and contraction • Examples – Wind current – Boil water in pot
![Convection You can hold your fingers beside the candle flame without harm but Convection • You can hold your fingers beside the candle flame without harm, but](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-10.jpg)
Convection • You can hold your fingers beside the candle flame without harm, but not above the flame. Why?
![Convection Examples Waterboiling What is happening Hot air popcorn What Convection Examples • Water…boiling – What is happening? • Hot air popcorn – What](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-11.jpg)
Convection Examples • Water…boiling – What is happening? • Hot air popcorn – What is happening? – The hot air transfers the heat to the cooler kernels, and when enough hot air heats the kernels they pop.
![Convection Convection](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-12.jpg)
Convection
![Convection Explains why breezes come from the ocean in the day and from Convection • Explains why breezes come from the ocean in the day and from](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-13.jpg)
Convection • Explains why breezes come from the ocean in the day and from the land at night
![Radiation Transfer of E by electromagnetic waves No movement of matter Radiation • Transfer of E by electromagnetic waves • No movement of matter –](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-14.jpg)
Radiation • Transfer of E by electromagnetic waves • No movement of matter – will work in vacuum or outer space • No contact or movement of fluid • Infrared, visible light, UV rays • Example – Fire emits radiation (infrared), skin absorbs E, increase in temperature
![Radiation Radiation can be absorbed and emitted Color Summer day wear Radiation • Radiation can be absorbed and emitted • Color – Summer day: wear](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-15.jpg)
Radiation • Radiation can be absorbed and emitted • Color – Summer day: wear light or dark clothes? – Winter day: wear light or dark clothes? – Why?
![Radiation Example Microwave Popcorn The kernels are heated by the radiation in Radiation Example • Microwave Popcorn – The kernels are heated by the radiation in](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-16.jpg)
Radiation Example • Microwave Popcorn – The kernels are heated by the radiation in the microwave, and the kernels heat up, giving off more heat to the kernels surrounding it and making it "doubly warm. "
![Radiation Interior of a car on a sunny day Sunlight comes in Radiation • Interior of a car on a sunny day • Sunlight comes in](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-17.jpg)
Radiation • Interior of a car on a sunny day • Sunlight comes in as visible light • Seats and interior are much cooler so they radiate in the infrared instead of visible • Glass in the windows blocks infrared so energy can’t get out • Car interior heats up!
![Radiation Radiation Electromagnetic waves that directly transport ENERGY through space Sunlight is Radiation • Radiation: Electromagnetic waves that directly transport ENERGY through space • Sunlight is](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-18.jpg)
Radiation • Radiation: Electromagnetic waves that directly transport ENERGY through space • Sunlight is a form of radiation that is radiated through space to our planet without the aid of fluids or solids. The energy travels through nothingness! Just think of it! The sun transfers heat through 93 million miles of space. • Because there are no solids (like a huge spoon) touching the sun and our planet, conduction is not responsible for bringing heat to Earth. Since there are no fluids (like air and water) in space, convection is not responsible for transferring the heat. Thus, radiation brings heat to our planet.
![What type of heat transfer is involved Heating a room with a fireplace What type of heat transfer is involved? • Heating a room with a fireplace](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-19.jpg)
What type of heat transfer is involved? • Heating a room with a fireplace • Egg cooking in a frying pan • Roof of a house becoming hot
![Lets Review http www quia compop10875 html BBC Bytesize http www bbc Let’s Review • http: //www. quia. com/pop/10875. html • BBC Bytesize http: //www. bbc.](https://slidetodoc.com/presentation_image_h/f569fb30c76962e5e2d4b94ad83c1fdd/image-20.jpg)
Let’s Review • http: //www. quia. com/pop/10875. html • BBC Bytesize http: //www. bbc. co. uk/schools/gcsebitesize/ science/aqa/energy/heatact. shtml • http: //www. bbc. co. uk/apps/ifl/schools/gcse bitesize/science/quizengine? quiz=heattest &template. Style=science
How does conduction transfer heat
Example of conduction
Food diagram
Energy transferred equation
How to calculate trophic level energy
Radiation examples
During conduction, thermal energy is transferred
Energy energy transfer and general energy analysis
Energy energy transfer and general energy analysis
How to transfer pattern markings to fabric
Transferred epithet figure of speech
A spoon in a cup of hot soup becomes warmer
Transferred epithet figure of speech
In a redox reaction, electrons are transferred
During pollination pollen is transferred from a stamen to a
Transferred epithet figure of speech
Antonomasia types
Female and male parts of a flower
Conduction picture
What 3 ways can heat be transferred
In a redox reaction, electrons are transferred