Consider a wagon that moves at a velocity reaching the top of a hill. This revision guide provides indepth coverage of all the externally assessed course content for gcse aqa physics. The rate of evaporation increases if the temperature of the liquid is increased, if the surface area of the liquid is larger or the air moving over the surface is more violent. At ground level, the wagon does not have potential energy. The moment method of lees is used to solve the problem of the steady flow of vapor between a hot liquid surface and a cold liquid surface. Figure 1 explains kinetic and potential energy of the wagon at three different places. The faster the atomsmolecules move the higher the temperature of the substance. You can use this fun evaporation multiple choice quiz to test your class understanding of the process of evaporation. The energy sources used in the generation of energy can be classified as two types. Electricity generation involves the transfer of energy from one form to another.
How science works is integrated throughout, with additional online activities offering comprehensive guidance and support. Gcse physics heat insulation links to all revision topics. Atmospheric physics lab work evaporation abstract in the first part of this experiment, the relationship between wind speed and evaporation is investigated. Static and current electricity scool, the revision website jump to navigation.
Gcse physics heat transfer answers and mark schemes questionsheet 6 a feathers trap more air 1 air is a good insulator 1 b newspaper also traps air 1 c points to include. Tutorials, tips and advice on gcse physics coursework and exams for students, parents and teachers. Condensation is the change in phase of a gas upon the surface of a solid due to its loss of energy to that solid. Water droplets often form on the surface of cool substances because the water vapor in the air loses energy when it comes into contact with the cold substance and turns to a liquid. Achieve the highest grades for the 91 course including free revision app.
We measure the evaporation under idealized conditions using a small wind tunnel. Evaporation, evaporation is known as a phase change meaning were going from one state of matter to another and in this case were going from a liquid to a gas but this is only occurring at the surface of the liquid unlike boiling where the entire mass of liquid is converted to gas. This video explains everything you need to know about evaporation. This book can be used to support study throughout the course and as a revision aid in the build up to exams. The macroscopic temperature and pressure jumps that occur at a condensate surface during a nonequilibrium phase change are calculated using a variational principle on the linearized boltzmann equation. May 9, 2017 evaporation and condensation gcse physics doodle science.
Its all to do with the transfer of heat, something youll look at in gcse science. Polymers formed this way are often used in clothing manufacture. Heat can turn a liquid into a gas and cooling can cause a gas to turn to a liquid. Tilt the condensation tray at one end to prevent the water droplets from falling on the leaves and spoiling them. One to one online tution can be a great way to brush up on your. Gcse physics heat insulation links to all revision. Kinetic energy moves the particles which hit the colder mirror, and condenses into a liquid. Gcse physics electromagnetism high demand questions questionsheet 6 a the diagram below shows a device that could be used for measuring the rate at which water flows through a pipe.
For example, if the water is not stirred at all the condensation will warm the top layer and thus speed up evaporation, slowing the net condensation. For full functionality of this site it is necessary to enable javascript. The lower the uvalue, the better the material is as an insulator the word insulator is also used in electricityfor a material which does not conduct. In a coal fired power station, for every 100 j of energy stored in the coal that is burned, only 40 j is transferred to the electricity. The quiz is selfmarking so children receive automatic feedback instantly. Heat thermal energy is due to the movement of atoms and molecules in a substance. Evaporation on the other hand is a passive process. Have a free meeting with one of our hand picked tutors from the uks top universities. P1 aqa evaporation and condensation teaching resources. The theory of evaporation and condensation is considered from a kinetic theory approach with a particular interest in the continuum limit. Evaporation and condensation aqa gcse science physics. What is the difference between evaporation and boiling. The liquid slowly absorbs energy from the surrounding area so that some of its particles gain enough energy. When evaluated for the bgk collisional model, the macroscopic jumps have values within 1% of a recent numerical calculation.
Therefore heat energy is really the kinetic energy of the atoms and. A material that is poor at conducting heat or electricity. Explain why a reading is obtained on the meter when the water flows in the pipe. This decreases the average kinetic energy of the remaining molecules so the temperature also decreases. Particle theory models, internal energy, heat transfer in state changes and latent heat and particle motion in gases written more from a physics point of view. Rate of evaporation depends on the temperature,the area and the surface and the state of the air above the surface. Liquids and gases can be changed from one state to another by heating or cooling. In this video we examine these two processes, how they.
There are changes in the way energy is stored when a system changes. Circle character watching water condense on mirror. Science notes on particle model latent heat of state changes gcse physics guide notes on. Physics p1 energy transfer by heating flashcards in. Indepth coverage provides everything required for thorough exam preparation detailed explanations and diagrams help consolidate and build on knowledge throughout the. Static and current electricity topic for gcse physics including revision notes, revision guides and question banks. Igcse edexcel physics method and measurement practical investigations 2. Increasing the suface area of a liquid, increasing the temperature of a liquid and. Furthermore, the microscopic density and temperature. The density of materials and the particle model of matter gcse physics revision notes. States of matter temperature changes and energy aqa. Energy transfer and efficiency calculations and sankey diagrams gcse physics revision notes.
Evaportation and condensation flashcards in gcse physics. Free 6 khoen adaptation for survival in animals aqa b1. The revision questions and answers for gcse physics paper 1, energy are below. Start studying heat transfer, evaporation and condensation.
Conservation of energy a level physics revision notes. By incorporating the singular nature of the problem, the forms of the continuum flow profiles found by plesset are. Students should be able to describe all the changes involved in the way energy is stored when a system changes, for common situations. The quiz has a number of questions all about evaporation and other linked processes. Heat thermal energy and heat transfer pass my exams. Condensation is the change of the physical state of matter from gaseous phase into liquid phase, and is the reverse of vaporization.
If one of these faster particles is close to the liquid surface it might have enough kinetic energy to break away and escape from the liquids. The process by which water vapour in the air is changed into liquid water. We then compare our results from the experiment with calculated values for the evaporation over the sea. You may not think of physics when it comes to keeping warm but heating and insulating buildings is all about conserving energy. The rate of both evaporation and condensation are affected by temperature. Insulation can be used to prevent heat escaping from a hot area e. Ocr gcse 91 gateway science physics a transition guide. Browse other questions tagged forces fluiddynamics condensedmatter solidstatephysics condensation or ask your own question.
Rate if evaporation increases with temperature, area of the exposed surface and wind. Home waves forces 1 energy waves p1 p5 p6 space energy. Click to have your questions answered by award winning condensation specialist wise property care. Yes, one can express the rate of condensation in terms of the rate at which heat is released in the process but that does not tell someone what the rates are. So polyester, draylon, terylene, kevlar and nylon are all condensation polymers. People actively apply energy to a liquid to turn it into a gas using a heater such as a kettle. Physics paper one energy sir thomas wharton academy. Definition of condensation define condensation physics. Evaporation and condensation are happening all the time, and we see the results of these processes every day, often without realising it.
Condensation definition in chemistry what condensation means in chemistry. An example of this can be the water droplets on the surface of a glass full of icecold water. Difference between boiling and evaporation physics. Particle model latent heat internal energy state changes gas. The most energetic liquid molecules escape from the liquids surface and enter the air.
Gcse physics revision guide and exam practice book for all. The fire heats the matt black metal case of the stove. When water vapour formed from evaporation comes in contact with the cold tumbler, it loses energy and gets converted to water. The wall where the condensation is occurring is too cold. The particles in a liquid have a range of speeds, with some particles moving much faster than the others. States of matter aqa gcse physics single science revision. Aqa p1 evaporation and condensation teaching resources. Perhaps the first thing that most people say is heat rises.
What effect would decreasing the surface area of a liquid have on its rate of evaporation. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Heat insulation in buildings what is an insulator and what are uvalues something that slows down the rate of heat transfer is called an insulator insulating materials for buildings are given uvalues. This aqa syllabus a quiz will help you revise what you learned in year 10 and year 11. They also produce a small molecule that is often water hence the term condensation. Igcse edexcel physics getting started students are often asked to carry out investigation for example.
The names of each polymer are linked to the names of the monomers. When the transition happens from the gaseous phase into the. Static and current electricity scool, the revision website. Cooling a gas will cause it to condense from a gas to a liquid and cooling it further will cause it to freeze from a liquid to a solid. Whilst not wrong, what you should say is hot air rises or hot water rises. Summary of 26 pages for the course physics at the latymer school. Give examples of energy in different forms, including kinetic, gravitational, chemical, strain, nuclear, internal, electrical, light and sound. Get the definition of the process of condensation, as used in chemistry, chemical engineering, and physics. Whenever energy is transferred from a primary resource to electricity the heat process wastes some energy. The first figure or page number always refers to the gcse physics book. Gcse energy heating and insulating buildings revision.
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