The document discusses the three main methods of heat transfer: conduction, convection, and radiation. It provides examples of each type of transfer. Conduction involves the transfer of thermal energy through direct contact of particles in a solid. Convection is the transfer of heat by the movement of fluids such as gases and liquids. Radiation involves the emission and transmission of electromagnetic waves for heat transfer without a medium. Common applications of these principles are also described.
This document provides an overview of heat transfer and related topics including:
- The three main modes of heat transfer are conduction, convection, and radiation. Conduction involves the transfer of energy between adjacent particles. Convection involves the movement of heated fluids. Radiation involves the emission and absorption of electromagnetic waves.
- Specific heat capacity refers to the amount of energy required to change the temperature of a material by a certain amount. It varies between materials.
- Thermal conductivity and contact resistance impact heat transfer rates during conduction.
- HVAC systems involve heating, cooling, humidifying, dehumidifying, cleaning, ventilating, and circulating air to control indoor environments.
- Air conditioning expanded the
This PowerPoint is one small part of the Geology Topics unit from www.sciencepowerpoint.com. This unit consists of a five part 6000+ slide PowerPoint roadmap, 14 page bundled homework package, modified homework, detailed answer keys, 12 pages of unit notes for students who may require assistance, follow along worksheets, and many review games. The homework and lesson notes chronologically follow the PowerPoint slideshow. The answer keys and unit notes are great for support professionals. The activities and discussion questions in the slideshow are meaningful. The PowerPoint includes built-in instructions, visuals, and review questions. Also included are critical class notes (color coded red), project ideas, video links, and review games. This unit also includes four PowerPoint review games (110+ slides each with Answers), 38+ video links, lab handouts, activity sheets, rubrics, materials list, templates, guides, 6 PowerPoint review Game, and much more. Also included is a 190 slide first day of school PowerPoint presentation.
Areas of Focus within The Geology Topics Unit: -Plate Tectonics, Evidence for Plate Tectonics, Pangea, Energy Waves, Layers of the Earth, Heat Transfer, Types of Crust, Plate Boundaries, Hot Spots, Volcanoes, Positives and Negatives of Volcanoes, Types of Volcanoes, Parts of a Volcano, Magma, Types of Lava, Viscosity, Earthquakes, Faults, Folds, Seismograph, Richter Scale, Seismograph, Tsunami's, Rocks, Minerals, Crystals, Uses of Minerals, Types of Crystals, Physical Properties of Minerals, Rock Cycle, Common Igneous Rocks, Common Sedimentary Rocks, Common Metamorphic Rocks.
This unit aligns with the Next Generation Science Standards and with Common Core Standards for ELA and Literacy for Science and Technical Subjects. See preview for more information
If you have any questions please feel free to contact me. Thanks again and best wishes. Sincerely, Ryan Murphy M.Ed www.sciencepowerpoint@gmail.com
The document discusses the three main methods of heat transfer: conduction, convection, and radiation. It provides examples of each type of transfer. Conduction involves the transfer of thermal energy through direct contact of particles in a solid. Convection is the transfer of heat by the movement of fluids such as gases and liquids. Radiation involves the emission and transmission of electromagnetic waves for heat transfer without a medium. Common applications of these principles are also described.
This document provides an overview of heat transfer and related topics including:
- The three main modes of heat transfer are conduction, convection, and radiation. Conduction involves the transfer of energy between adjacent particles. Convection involves the movement of heated fluids. Radiation involves the emission and absorption of electromagnetic waves.
- Specific heat capacity refers to the amount of energy required to change the temperature of a material by a certain amount. It varies between materials.
- Thermal conductivity and contact resistance impact heat transfer rates during conduction.
- HVAC systems involve heating, cooling, humidifying, dehumidifying, cleaning, ventilating, and circulating air to control indoor environments.
- Air conditioning expanded the
This PowerPoint is one small part of the Geology Topics unit from www.sciencepowerpoint.com. This unit consists of a five part 6000+ slide PowerPoint roadmap, 14 page bundled homework package, modified homework, detailed answer keys, 12 pages of unit notes for students who may require assistance, follow along worksheets, and many review games. The homework and lesson notes chronologically follow the PowerPoint slideshow. The answer keys and unit notes are great for support professionals. The activities and discussion questions in the slideshow are meaningful. The PowerPoint includes built-in instructions, visuals, and review questions. Also included are critical class notes (color coded red), project ideas, video links, and review games. This unit also includes four PowerPoint review games (110+ slides each with Answers), 38+ video links, lab handouts, activity sheets, rubrics, materials list, templates, guides, 6 PowerPoint review Game, and much more. Also included is a 190 slide first day of school PowerPoint presentation.
Areas of Focus within The Geology Topics Unit: -Plate Tectonics, Evidence for Plate Tectonics, Pangea, Energy Waves, Layers of the Earth, Heat Transfer, Types of Crust, Plate Boundaries, Hot Spots, Volcanoes, Positives and Negatives of Volcanoes, Types of Volcanoes, Parts of a Volcano, Magma, Types of Lava, Viscosity, Earthquakes, Faults, Folds, Seismograph, Richter Scale, Seismograph, Tsunami's, Rocks, Minerals, Crystals, Uses of Minerals, Types of Crystals, Physical Properties of Minerals, Rock Cycle, Common Igneous Rocks, Common Sedimentary Rocks, Common Metamorphic Rocks.
This unit aligns with the Next Generation Science Standards and with Common Core Standards for ELA and Literacy for Science and Technical Subjects. See preview for more information
If you have any questions please feel free to contact me. Thanks again and best wishes. Sincerely, Ryan Murphy M.Ed www.sciencepowerpoint@gmail.com
A black hole is a region of space where gravity is so strong that nothing, not even light, can escape. Black holes form when a large star collapses in on itself and the matter is squeezed into an incredibly tiny space. The strongest gravity exists near supermassive black holes located at the center of galaxies, like the 4 million solar mass black hole at the center of the Milky Way. Although black holes cannot be seen directly, scientists can observe their effects on nearby stars and gas and use this information to learn more about these mysterious cosmic objects.
1. Проектна задача по Физика
Тема: “ Метеор – ѕвездата која паѓа “
Ментор: Изработила:
Благојче Кривевски Весна Карчевска
Март, 2013 година
2. Вовед
* Метеорите биле познати уште од античките времиња, но не
биле познати за да бидат астрономски феномен се до
почетокот на 19 век.
* Силиман верувал дека имале космичко потекло
* Ноември 1833г. спектакуларен метеорски дожд
* Астрономот Денисон Олмстед направил обемна студија на
ова невреме и заклучил дека тие имале космичко потекло.
3. Метеор
* Метеор е светлосна појава што настанува со јонизација на
атмосферата низ која поминува метеороидот.
* Се појавуваат на височина од 75км до 100 км над површината
на земјата.
* Ако метеорот го преживее минувањето низ атмосферата и
падне на површината на некое небесно тело, се нарекува
метеорит.
4. Светлосна трага
Настанува со пренесување на кинетичката енергија на
метеороидот врз атомите на атмосферата.
Температурата во ударниот бран изнесува повеќе од 10.000 С, а
зад неа останува трага од јонизиран гас или плазма што свети.
5. Поим за метеор
“ Ѕвездата која паѓа “ или метеор се појавува кога ситно
тело од Сончевиот систем влегува во земјината атмосфера
и се загрева до точка каде испушта светлечка трага.
- Аблација
- Светлечка трага на метеорот
6. Метеорит
Метеорит е парче од метеороид што од вселената поминал
низ атмосферата и паднал на површината на Земјата или на
некое друго небесно тело.
- Се делат на три основни групи:
1. Железни (сидерити)
2. Камени (аеролити)
3. Железно-камени (сидеролити)
7. Метеороид
Метеороид е честичка од меѓупланетарен материјал од
времето на создавањето на Сончевиот систем, различна по
состав и потекло.
Кога метеороидот ќе биде привлечен од гравитацијата на
Земјата, кога поминува низ атмосферата се загрева и во случај
да нема доволно голема маса таа согорува оставајќи светол
зрак – метеор.
8. Метеорски рој
Метеорите се јавуваат како поединечни или во роеви. Во
роевите има од 10 до 1000 метеорски појави за еден сат,
понекогаш има дури до 10 000.
- Брзината на метеорите е од 11,2 до 73км/ѕ.
- Најмала релативна брзина на метеорот – 0.
10. Потекло на метеорскиот рој
Метеорските роеви настануваат од облак на ситни цврсти
честици. Радијантот на метеорскиот рој се наоѓа во некое
соѕвездие, блиску до некоја ѕвезда и најчесто метеорите се
именувани според тие ѕвезди.
- Има десетина низ целата година;
- Потекнуваат од комети;
11. Заклучок
Некаде при крајот на 18от век двајца германски студенти вовеле
постапка заснована на тригонометрија, со која се определува
висината на метеорите.
Метеорите се испитуваат :
- визуелно
- фотографски
- спектрографски
- со радиолокација
- телескоп
