How conduction convection and radiation occur in a car engine?
Car engines are cooled by convection currents in the water pipes. Pums are used to help the water circulate.The water carries the unwanted heat to the radiator, this is how it exchanges the heat. Radiation were gonna learn in a week. Might add the other part next
Know this cus i go Grammar School.
It can occur through conduction, convection and radiation.
Because conduction and convection require particles to transfer heat. Space is a vacuum (has no particles in it) so convection and conduction cannot occur.
radiation means of heat transfer does not need environment or medium for its transfer. Transfer of heat by conduction or convection needs medium for this transfer to occur. This medium can be: * solid in conduction heat transfer, or * liquid and/or gas for convection or conduction heat transfer.
Yes, except for conduction and convection.
by radiation - convection and conduction cannot occur in a vacuum!
1. Conduction 2. Convection 3. Radiation
Radiation requires neither contact (through which conduction transfers heat) nor mass flow or movement (through which convection transfers heat). Only radiation can take place in a vacuum. Convection and conduction both require a material medium for the heat transfer to occur. Only radiation can transfer thermal energy through the vacuum of space.
Conduction, convection, radiation Conduction: The transfer of energy by collisions between the atoms and molecules in a material. Convection: Transfers heat when particles move between objects or areas that differ in temperature. Radiation: The transfer of energy by waves.
through thermal radiation, a type of electromagnetic radiation, convection and conduction could not occur because there are barely anything in space
It's a different way to transfer heat. One object emits electromagnetic radiation (for example, infrared - though it depends on the temperature); another object absorbs it. Heat transfer through radiation can occur in empty space; with conduction and convection, that's not possible.
Condction-- In the Iron Box or Kettle from flame to Pot bottom Convection-- Airconditioning the room .Cooling takes place by movement of the cooler particles. Radiation-- From Sun transfer of heat. Or from a Bonfire in cols places.
All three methods of heat transfer occur: conduction, convection, radiation. However, heaters are often designed to transfer lots of heat via radiation.
There are three ways to transfer heat energy (conduction, convection, radiation); any of the three can occur, for an object to lose heat energy.
conduction - requires direct physical contact between source and sink convection - requires a fluid between source and sink radiation - electromagnetic radiation from source to sink
Conduction doesn't occur in fluids. Convection currents are the form in which heat travels in fluids.
There are three types of heat transfer, namely conduction, convection and radiation. Heat is transferred until the reach a state of equilibrium. Conduction is basically the transfer of heat through a surface of contact, such as a fire to the base of a pot. We say that a material is a good or poor conductor of heat when heat travels quickly or slowly in that particular material. Good conductors of heat are metals whereas poor… Read More
No, Convection does not occur in the Core. For example, in the Sun, the convection occurs only after the Radiation zone. In the radiation zone the energy is transported by radiation (ie, by photons). At about 0.8 solar radius the density and temperature are not enough to transport the energy by radiation, so convection sets in.
convection as you know is one of the three ways in which heat is transferred, the other two are conduction and radiation. there are two types of convection heat transfer, one being free convection which is ambient air molecules which are in contact with each other which transfer heat to neighboring molecules. The other type of convection is forced convection where the heat transfer is not allowed to occur ambiently, rather it is made to… Read More
It cannot be transmitted by conduction nor convection because there is no material connection between the sun and the Earth. Conduction and convection need a medium through which to travel, and since the space between the Earth and the Sun is considered a vacuum, they cannot occur. However, radiation does not require a medium through which to travel. It can travel through a vacuum, and therefore space. Therefore, it's the only surviving option for heat… Read More
Consider for a moment how each form of heat energy is transmitted. Conduction requires contact, physical connection between the heat source and the conducting material and the receiver. A conventional electric stove element is a good example of this. As the floor is not floating in air, some conduction of heat does occur, it is difficult to insulate from completely, but the transfer is negligible. Convection is the transfer of heat via a fluid matrix… Read More
That depends on the type of heating system. Central heating systems that blow air into living areas through vents after heating it are heating primarily by convection. The older hot water systems that use radiators with hot water flowing through them are heating primarily by conduction, although convection is also occurring because the heating of the air around the radiators causes it to rise. Space heaters with red-hot heating elements are heating primarily by radiation… Read More
All three. A furnace burns something, this creates heat which can dissipate in those 3 ways. All 3 occur: Radiation: the fire radiates heat which can be seen with infrared goggles. Convection: The fire heats up air which rizes and leaves the system. Conduction: The fire heats up the materials of the furnace, causing the heat energy to heat up the air on the outside of the furnace, which in turn convect.
What process is a method of heat transfer but it does not contribute to the moving heat energy in and around the earth?
There are three means of heat transfer, Convection, conduction, and radiation. All three occur to some degree in all heat transfer processes.
I'm not sure that it does occur more readily in the solid state. Solids cannot conduct heat by convection, thus what is left for heat transfer from one metal to another is conduction. Gas and liquid states can do both, conduction and convection.
Well it differs in this way. Conduction is when heat is applied to an object and causes mainly the point of contact to be heated. For example lighting a match under a metal rod. It will mainly heat the point of contact, eventually heating the rest of the rod. Additionally, conduction can be referred to when talking about electricity and whether a material can conduct or not. Convection is different as it disperses heat evenly… Read More
no,as convection can never occur in solids[they allow only conduction].In a solid ,the particles[molecules] are closely packed together so then the cannot allow movement which is required in convection
By both way. Conduction is the basic of heat transfer, the energy (heat) is transfer from molecule to molecule from different in temperature gradient. Concept of convection is when there is motion of molecule come to concern like wind blow and take away the heat rapidly. Convection heat transfer can only occur in fluid state e.g. liquid and gas. In solid, only conduction heat transfer taken place.
Imagine you put your hand next to one cookie without touching it your hand feels warm by what method has the thermal energy of the cookies transferred to your hand?
All three methods of heat transfer can occur in this case (conduction and convection through the air), but probably the most important one is radiation.
Convection and conduction are both means of heat transfer involving materials. Convection usually occurs in liquids and gases. Heated parts of these materials expand and become less dense. Pressure from the cooler, less light parts (due to gravity) pushes the lighter heated parts upwards. Near the surface , these cool, sink and circulate upwards again when heated. Conduction can occur in all substances but most efficiently in solids like metals where the particles are close… Read More
Conduction requires contact, radiation does not. Radiation in regards to thermodynamics is the straight line (line of sight) transfer of heat from a hot body to a cold body with no intervening fluid to convey that heat. Example: a flame will heat an object some distance from it by radiation as long as the transfer of heat is unobstructed. Place an object between the two and this flow of heat will stop. Conduction is the… Read More
Conduction occur without any flow of material medium Conduction only occur in solid.
Convection currents occur in the asthenosphere.
Nuclear fusion occurs in the center or core of the sun. Heat then flows outward to the outer surface by radiation and convection.
No. Heat transfer through empty space can only occur through radiation.
The question asks only about the differences between radiation heating and convective heating. Refer to other answers concerning a description of these two types of heating. The differences between radiation and convection are: In radiation heating, the radiation itself is the source (but not necessarily the only source) of thermal energy, whereas in convection heating, a separate, external source is required to create the convective currents - that is, the currents themselves are not the… Read More
convection and radiation heat transfer bot occur without either object being in direct contact with each other.
How does the temperature remain constant in a vacuum flask. Explain why in can do so over a long period of time?
Vacuum is a great insulator, because there needs to be some medium for processes of conduction or convection to occur. The only possible way to transfer heat through vacuum is radiation, which is not as effective, especially that flask walls are also constructed to limit radiation heat transfer(they are reflective). Temperature stays the same if there are no means to transfer energy between interior end environment.
Heat is the transfer of energy from one object or substance to another. There are three types of heat transfer - conduction, convection, and radiation. Conduction requires that the first object (or substance) be in direct physical contact with the second. A vacuum between the substances prevents this type of heat transfer, which is why double-paned windows are evacuated between the panes to reduce heat transfer to the outside. Convection occurs when atoms or molecules… Read More
Convection currents occur in the Earth's mantle
A combination of heat paths will be in effect within an oven. The main method of heat transportation will be radiation from the oven heating element to the surface of the cake which will heat the outer surface of the cake. Conduction will them allow this heat to transfer to the interior of the cake via contact paths between each molecule of cake mixture. Conduction will also occur between any air particles which are in… Read More
Explain difference between heat transfer mechanisms in solids liquids gases and combinations of substances in terms molecular motion bulk motion and surface properties in industrial processes?
In solids, heat is transferred by conduction, the movement (vibration) of molecules. Heat transfer from solids to liquids and gases takes place through convection, or the movement of fluids at the surface. Radiation heat transfer can occur without a medium.
Thermoregulation, first of all, is the maintenance of a constant body temperature. The skin is the major organ in thermoregulation. There are four processes called: conduction, convection, evaporation, and radiation. Conduction occurs when heat moves from an area of higher temperature to an area of lower temperature similar to a concentration gradient. This is analogous to when someone is cold and he huddles around a group of people to stay warm. The heat of the… Read More
Because convection occurs by convection currents. Convection currents occur as a result of the movement of a body. Since solids cant move, convection only occurs in fluid, i.e., liquids and gases
Because, conduction is the transfer of heat flow fro one object to another. So that means they must touch to make conduction occur.
Within the pot handle (solid) heat transfer is by conduction. Within a persons hand heat is transferred namely by conduction. Heat convection does occur by motion of the body fluids but it's slower. When you grab the hot handle of a pot you can immediately feel the sensation of "hot".Heat conduction is the mechanism responsible for this fast transfer.
The Convection occur inside the mantle (earth)
There are three mechanisms by which thermal energy (heat) is transferred through space: conduction, convection, and radiation.1 Radiation is the transfer of heat energy through empty space. All objects with a temperature above absolute zero radiate energy at a rate equal to their emissivity multiplied by the rate at which energy would radiate from them if they were a black body. No medium is necessary for radiation to occur; radiation works even in and through… Read More
Heat travels via three possible mechanisms: conduction, convection, and radiation. Heat can travel by convection through any space containing mass. Some materials are very good insulators and heat can only travel very slowly through them. Heat cannot travel via conduction through a perfect vacuum. Conduction occurs via molecules interacting with each other - usually colliding. Where mass is widely dispersed - such as very low pressure gas - conduction takes a lot longer because collisions… Read More
Convection can only occur in liquids and gases, it can't occur in solids. Because the particle theory explains that in order to have convection, the particles need to be able to bump and vibrate and move in a circular pattern. yes, it can also occur in solids.
No. Convection currents which could lead to volcanism in the crust occur in the mantle. The crust is too cold and brittle for convection currents to occur.