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Why the sun's heat not reach the earth by conduction or conviction?
The sun's heat reaches the Earth through radiation, not conduction or convection. Radiation is the transfer of heat energy in the form of electromagnetic waves, such as light and infrared radiation, which can travel through the vacuum of space to reach us. Conduction and convection require a material medium, which is not present in the vacuum of space.
Why can't heat travel from the sun by convection or conduction?
Because there are no atoms to collide with to transfer the heat energy from the sun, thus, there is no conduction. This is also the same reason that there are no convection currents in space; There are no atoms to collide with to transfer heat. Thus, the only possible way to transfer heat is by radiation.
How do you know that heat is transferred from the sun to earth by radiation?
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 transmission.
Is a sun a conduction convection or radiation?
The sun primarily transfers energy through radiation. Energy from the sun is released in the form of electromagnetic waves, which travel through the vacuum of space to reach the Earth. Convection and conduction processes occur within the sun itself, as part of its internal energy distribution.
What are the different types of heat transfer?
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 conductors of heat are rubber and Styrofoam. Conduction cannot occur in a vacuum. Convection is the transfer of heat through molecules. It can only occur in liquids and gases as there are relatively big spaces between the molecules. A convection current is where hot air rises and cold air sinks. Convection cannot occur in a vacuum. Radiation is the transfer of heat through a vacuum. Heat is transferred from the Sun to Earth through radiation.
Why can't the suns heat reach us by conduction or convection?
because there is no medium, conduction and convection need medium to spread through, they cannot spread through vacuum.
Why the sun's heat not reach the earth by conduction or conviction?
The sun's heat reaches the Earth through radiation, not conduction or convection. Radiation is the transfer of heat energy in the form of electromagnetic waves, such as light and infrared radiation, which can travel through the vacuum of space to reach us. Conduction and convection require a material medium, which is not present in the vacuum of space.
Why can't heat travel from the sun by convection or conduction?
Because there are no atoms to collide with to transfer the heat energy from the sun, thus, there is no conduction. This is also the same reason that there are no convection currents in space; There are no atoms to collide with to transfer heat. Thus, the only possible way to transfer heat is by radiation.
How do you know that heat is transferred from the sun to earth by radiation?
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 transmission.
What is the surface of earth is much more effectively warmed by this type of heat transfer than the atmosphere?
The surface of the Earth is more effectively warmed by radiation heat transfer than by conduction or convection. This is because radiation from the sun can penetrate the atmosphere and reach the Earth's surface, where it is absorbed and converted into heat. Conduction and convection play a role in redistributing this heat throughout the atmosphere.
Is a sun a conduction convection or radiation?
The sun primarily transfers energy through radiation. Energy from the sun is released in the form of electromagnetic waves, which travel through the vacuum of space to reach the Earth. Convection and conduction processes occur within the sun itself, as part of its internal energy distribution.
How do you know that heat travels from the sun to the earth by radiation?
It's the only way heat could reach us. It comes via electromagnetic radiation, discovered theoretically by James Clerk Maxwell. It can't come by conduction or convection because space is empty, there is no air there.
Is the suns energy radiant?
Yes. Here's a logical proof: There are three ways to transfer energy from place to place: --Conduction, --Convection, --Radiation. Conduction and convection need a 'medium' ... a substance to conduct or convect through. Radiation doesn't need anything to travel through. There is no medium ... no substance ... in the space between the sun and the earth, but heat and light from the sun reach the earth constantly. Since there is no medium for it to travel through, it can't be getting here by means of conduction or convection. The only possibility is radiation.
How does conduction increase the temperature of above earth's surface?
[hope that you mean the "air layer" just above the earth] Conduction is the way of energy transmission in solids. But when it comes to the air it is by convection & radiation. So when the solar radiations reach the earth they heat up the surrounding air molecules. Further they heat up the ground. So next the ground becomes the heat source for the air & heat energy is transmitted to the air layer just above by convection.
You place a hot glass rod in a cup filled with a cold liquid describe what will happen to the rod and the liquid with time?
They'll eventually reach the same temperature.
What are the different types of heat transfer?
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 conductors of heat are rubber and Styrofoam. Conduction cannot occur in a vacuum. Convection is the transfer of heat through molecules. It can only occur in liquids and gases as there are relatively big spaces between the molecules. A convection current is where hot air rises and cold air sinks. Convection cannot occur in a vacuum. Radiation is the transfer of heat through a vacuum. Heat is transferred from the Sun to Earth through radiation.
How do you know that infrared radiation does not reach earth by convection?
Infrared radiation does not reach Earth through convection because convection is the transfer of heat through the movement of fluids like air or water. Infrared radiation, on the other hand, travels through electromagnetic waves in a vacuum, such as space, and does not require a medium to transfer heat.
