Condensation and evaporation are two terms that appear early on and often when learning about weather processes. What three things increase the rate of evaporation. Condensation and evaporation are two processes by which matter changes its phase. Perhaps the easiest may to think of the second law, however, is one that is very familiar to meteorologists. Evaporation is a fundamental part of the water cycle and.
For evaporation to occur, molecules in a liquid must be near the surface, must be moving away from the body of the liquid, and must have enough kinetic energy to escape the. When water vapour formed from evaporation comes in contact with the cold tumbler, it loses energy and gets converted to water. Evaporation and condensation differentiated survival. There are energy changes when changes in state occur. 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. 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.
Continued heating will cause the liquid to boil or evaporate. The kinetic particle theory explains the properties of solids, liquids and gases. Complete lesson on states of matter, evaporation and condensation with key content from aqa physics. Physics revision site winner of the iop web awards 2010 cyberphysics a physics revision aide for students at ks3 sats, ks4 gcse and ks5 a and as level. Start studying heat transfer, evaporation and condensation. Liquids and gases can be changed from one state to another by heating or cooling. Some hotter particles have more kinetic energy than others.
State changes kinetic particle theory and state changes. The term evaporation refers to the process when it is unforced. Evaporation is a process by which water is converted from liquid to gaseous state. Figure 7 these girls are enjoy ing the water from the hot spring. Condensation is the process by which water vapor or gas goes from the gaseous state to the liquid state. Help with gcse physics, aqa syllabus a as level and a2 level physics. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq.
Water boils at 212 degrees f 100 degrees c, but it actually begins to evaporate at 32 degrees f 0 degrees c. This is called condensation the opposite of evaporation. Brownian motion is the random movement of fluid particles. Evaporation occurs faster with a faster draught since it maintains a partial pressure, which is the amount of water in the air, gradient. An example of this can be the water droplets on the surface of a glass full of icecold water. Energy can be transferred by conduction, convection, evaporation and condensation. After they leave the liquid the average kinetic energy of the remaining molecules has decreased, making it cooler. Factors affecting the rate of condensation when a gas condenses to form a liquid, its particles are cooled down which means that they lose kinetic energy.
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. P1 aqa evaporation and condensation teaching resources. Start studying evaporation and boiling summer gcsephysics learn vocabulary, terms, and more with flashcards, games, and other study tools. If one of these faster particles is close to the liquid surface it might have enough kinetic energy to. Evaporation is the process by which molecules undergo the a spontaneous transition from the liquid phase to the gas phase. Gcse aqa c1 fractional distillation question about precipitation and evaporation i built a new energy resource, and it works. Your child will learn what evaporation is, as well as the different places it can be seen in their everyday lives. Water is in earthen pots because water seeps through the pores on to the outside from where it.
How evaporation causes cooling boost your gcse physics. Tes global ltd is registered in england company no 02017289 with its registered office. Ks4 gcse physics aqa p1 conservation and dissipation of energy 22 ws and 20 ms only bundle. This book includes 25 advanced and revised contributions, and it covers mainly 1 evaporation and boiling, 2 condensation and cooling, 3 heat transfer and exchanger, and 4 fluid and. Ks4 gcse physics aqa p1 conservation and dissipation of ene 9 ws and 9 ms only bundle. Heat is the kinetic energy of particles as they vibrate. The particles in a liquid have a range of speeds, with some particles moving much faster than the others. Go search hello select your address best sellers customer service find a gift. The fog consists of tiny droplets of water that form on the cool surface of the mirror. Ks4 gcse physics aqa p1 conservation and dissipation of energy all 10 ppts 22 ws 20 ms. By incorporating the singular nature of the problem, the forms of the continuum flow profiles found by plesset are. Explore more than 66 evaporation and condensation resources for teachers, parents and pupils as well as related resources on water cycle. Infer why the girls appear to be comfortable in the hot spring while.
In addition to heat transfer by radiation, conduction and convection, heat can also be transferred by evaporation, and its opposite condensation. Boil, evaporate, boiling point, kinetic energy, bonds, bulk property, surface course overview. Water droplets on the outside of a cold bottle of water. If the container is sealed, evaporation will continue until there is enough vapor density for the condensation rate to equal the evaporation rate. Heat can turn a liquid into a gas and cooling can cause a gas to turn to a liquid. The processes of condensation and evaporation occur frequently, both in nature and around the house. As well as conduction, convection and radiation, evaporation and condensation transfer heat energy from place to place. Physics revision site recommended to teachers as a resource by aqa, ocr and edexcel examination boards also recommended by bbc bytesize winner of the iop web awards 2010 cyberphysics a physics revision aide for students at ks3 sats, ks4 gcse and ks5 a and as level. Aqa p1 evaporation and condensation teaching resources. Boiling happens to all of a liquid at once and occurs only when a liquid is heated to one specific temperature, its boiling point. Humidity, evaporation, and boiling college physics. Free 6 khoen adaptation for survival in animals aqa b1. Condensation, particles and heat transfer gcsephysicsninja.
Help your students get off to a great start with this simple study guide outline. This is a great tool that can be used to inform your parents about w. Addition polymers simply add dozens of the same monomer together to make a long molecule with a very simple repeat unit. Well that is condensation right youve just witnessed a phase change waters change from the gas to water vapor in the room around you to a liquid form those droplets that are running down the can and then forming a little pool below the can so lets talk about the physics of condensation. Gcse chemistry the best free revision for gcse science.
Free practice questions for high school biology understanding the water cycle. Choose from 50 different sets of evaporation physics flashcards on quizlet. Oct 23, 2005 evaporation and condensation if 58 grams of hot water at 71c is poured into a cavity in a very large block of ice at 0c, what will be the final temperature of the water in the cavity. Dec 23, 2015 evaporation could occur at any temperatures. Evaporation and condensation gcse physics doodle science. Evaporation, condensation, and precipitation are the three main parts of the water cycle, but there are some other stages that water can cycle. Original post by nityaaditya some of the most useful effects of evaporation. Evaporation and condensation aqa gcse science physics. Have you ever wondered how clothes dry outside on a hot day.
The differences between boiling and evaporation gcse keywords. Explaining physics gcse edition stephen pople course book. Evaporation, boiling and condensation if a liquid is left with its surface exposed to the air, it evaporates. They increase with temperature and are independent of the presence of other gases, such as air. Condense, condensation, gas, liquid, kinetic energy, liquid bonds, heat transfer. Gcse physics p1 states of matter, evaporation and condensation. Evaporation is the process by which water changes from a liquid to a gas or vapor. Evaporation igcse physics ppt video online download slideplayer. Glass, wood and plastic are all poor conductors of heat.
Even if you dont want to study science or maths further, the grades. In this video we examine these two processes, how they. What is the difference between evaporation and boiling. Gcse physics revision condensation and heat transfer. A fully resourced practical lesson on evaporation and condensation based on a video of a solar still by bear grylls.
Useful and harmful aspects of evaporation and condensation. We then compare our results from the experiment with calculated values for the evaporation over the sea. Kinetic energy moves the particles which hit the colder mirror, and condenses into a liquid. Learn evaporation physics with free interactive flashcards. Each substance will have its own energies of condensation and evaporation, due to the size and bond structure of the molecules. Research evaporation and condensation world of physics. Evaporation, on the other hand, is the transition from liquid to gas.
Pupils will be able to make their own solar still using equipment available in the lab. It occurs when particles at the exposed surface of a. Students will also develop and practice higher order thinking skills. I am wondering if anyone has good book recommendations for me to. The temperature at which the water starts evaporating is known as latent heat of vaporisation. Evaporation, condensation, melting, and freezing study guide outline phase changes king virtues classroom starting your unit on matter. Gcse energy what affects rate of heat transfer revision.
These processes are studied as a part of the larger field of thermodynamics. What will my child learn from this evaporation powerpoint. Perhaps looks easy on the surface however usually assessed with 6mark questions and calculations as well graphical work. It is an essential part of a gcse physics syllabus that you are able to understand what energy transfers take place in certain situations and how those transfers occur. To do well in gcse science, students need to understand the transfer of heat energy, an important part of physics. Change of phase evaporation condensation fogs and clouds boiling. 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. Increasing the suface area of a liquid, increasing the temperature of a liquid and.
Worksheet included that can be used for the lesson. Is the movement of thermal energy through a material without the particles in the material moving. Evaporation, condensation and heat transfer intechopen. Evaporation and condensation are both ways in which matter can change its state. A substance melts or freezes at a temperature called its melting point, and boils evaporates rapidly or condenses at its. Evaporation takes place from the surface of a liquid. If a particle reaches a high enough energy level its able to escape from a liquid and form a gas.
This video explains everything you need to know about evaporation. Evaporation is the process of a substance in a liquid state changing to a gaseous state due to an increase in temperature and or pressure. A description of evaporation and condensation of water. Evaporation can be increased by by increasing the surface area of the liquid, by increasing the liquids temperature, or by creating. Sep 04, 2018 hi, i am doing my dissertation for mechanical engineering on solar stills and my mentor has suggested it would be a good idea to research the physics of lightinfrared absorption, transmission, water evaporation and condensation. It also teaches students about cycles and how they work.
To help you get even better grades ive written a lot of e books, packed full of loads of excellent questions to help you study. Research help with the physics of lightinfrared absorption. They will learn about what causes evaporation, what can and cannot evaporate as well as the process that liquid goes through as it turns into a gas. Sep 15, 2015 i want to help you achieve the grades you and i know you are capable of. The second law and evaporation of liquid the second law of thermodynamics can be expressed in many ways, many of which can seem very confusing and unintuitive. Physics gcse revision heat transfer by infrared radiation duration. Evaporation condensation melting freezing study guide. Some of the hot water from the shower evaporates, so. 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. Worksheet to help students understand change of state in terms of forces, kinetic energy, internal energy and bonds. What effect would decreasing the surface area of a liquid have on its rate of evaporation.
Atmospheric physics lab work evaporation abstract in the first part of this experiment, the relationship between wind speed and evaporation is investigated. This website and its content is subject to our terms and conditions. The theory of evaporation and condensation is considered from a kinetic theory approach with a particular interest in the continuum limit. If a particle reaches a high enough energy level its able to escape from a liquid. The heat energy that these gas particles lose when they become a. Rate if evaporation increases with temperature, area of the exposed surface and wind. Condensation is the change of the physical state of matter from gaseous phase into liquid phase, and is the reverse of vaporization. Phase transitions play an important theoretical and practical role in the study of heat flow. As the temperature increases, the rate of evaporation also increases. Name some factors that affect the rate of evaporation. Chemistry questions 2 on mixtures and simple distillation. Some hotter particles have more kinetic energy than others and therefore move. When the transition happens from the gaseous phase into the. Explains how an increase in energy causes water to evaporate to form steam, and how a decrease in energy causes steam to condense to water.
The attractive forces between the particles bring them closer together so that they form liquid bonds. Vapour in the air condenses when it hits a surface that is cooler than its boiling point. We measure the evaporation under idealized conditions using a small wind tunnel. Imagine a whole bunch of liquid particles, moving around and slipping and sliding over each other. What you need to know for gcse science and additional science for gcse chemistry. Both evaporation and boiling are a process where a liquid change state into a gas. Learn about and revise the relationship between temperature and energy and also about changes of state with gcse bitesize physics.
Evaportation and condensation flashcards in gcse physics. Condensation is the change in phase of a gas upon the surface of a solid due to its loss of energy to that solid. Most of the material for studying complete gcse chemistry and igcse is also included. Heat transfer by evaporation in addition to heat transfer by radiation, conduction and convection, heat can also be transferred by evaporation, and its opposite condensation. States of matter temperature changes and energy aqa. Evaporation happens when a liquid changes into a gas without boiling. This exciting aqa syllabus a quiz will help year 10 and year 11 pupils revise the factors which affect the rate of transfer i. The theoretical analysis and modeling of heat and mass transfer rates produced in evaporation and condensation processes are significant issues in a design of wide range of industrial processes and devices. The evaporation and condensation cycle of water is a common core lesson that teaches students about condensation and evaporation. Condensation is the transition from a gaseous phase to a liquid or solid phase. States of matter aqa gcse physics single science revision. Urine can be made with water and yellow food colouring for fully amazed pupils.
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