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From one object to another due to a temperature difference between them
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Why is heat energy a low grade energy and work a high grade energy?
Because heat gives off energy and is the first part of the energy cycle. Heat is the beginning of cold, and many other things.
How can heat transfer through matter?
Hot matter and cold matter differ by the kinetic energy the atoms/molecules have. Temperature (as measured on the absolute temperature scale) is proportional to the average kinetic energy of the particles in a material.Normally we classify movement of heat according to three processes, thermal conduction, radiative transfer and convection.Heat transfer by Convection occurs in a fluid because it moves and the heat energy contained in the fluid moves with it. This is very important in home insulation and the main reason we insulate walls with fibers to inhibit motion of the air. Radiative transfer of heat occurs when the hot object emits electromagnetic radiation (light) and that electromagnetic radiation carries its energy elsewhere. We can see light energy that came from the sun or even a light bulb, but there is much more energy at longer wavelengths in the infrared part of the spectrum that we can't see. Radiative energy travels through materials (like air) that are transparent, or nearly so, for the particular part of the spectrum carrying the heat. (The distribution of energy emitted as light changes with the temperature of the object doing the emitting which is why we say something is "white hot" meaning it is at a high temperature.)It is heat transfer through conduction that we observe when we say heat travels through a solid body. If one part of an object it hotter than another, the molecules in that part have more kinetic energy. If left undisturbed, heat energy in a hot spot gradually spreads out into the whole object through thermal conduction of heat. Thermal conduction is nothing more that the energetic particles having collisions with their less energetic neighbors and thereby passing on some energyto them. The process happens many millions of times a second between neighboring molecules so only small amounts of energy need transferred from a "hot" molecule to a cooler neighbor for the over all process of neighbor to neighbor transfer to effectively carry that energy from a hot spot to cool spots. Eventually, the temperature of an isolated object will become uniform through this process of intermolecular energy transfer which we recognize as thermal conduction.
How does heat capacity makes water a good heat sink?
If a body of water has a high heat capacity, it can store more thermal energy making it a good heat sink.
What cause low and high pressure?
Heat and cold air.
What practical use would a substance with a very high specific heat have?
Heat and thus energy storage. UK heating systems in homes use circulating water to heat homes because of water's high Specific Heat Capacity.
Heat energy travels from an object with a high what?
temperature to an object with a low temperature
How do pebbles absorb heat?
As long as the pebble is colder than the incident heat, it will absorb energy. This is a fundamental concept in heat transfer - heat travels from a high energy regime to one of lower energy.
What causes heat or the transfer of energy from object to another?
High albedos
What causes heat or the transfer of energy from one object to the another?
High albedos
When does energy transfer from a cold object to a hot object?
heat only move from high temp to lower temp
The energy transferred from a hotter object to a cooler one?
The law says that energy can neither be created nor be destroyed. It can only be transferred from one form to another.... And energy always from higher potential to lower potential... Since hotter object is at high potential and cooler object at lower potential, the heat energy will flow from hotter to cooler object.
Why is cold just the absence of heat?
"Cold" is a relative term, like "high" or "fast". It does exist as a qualitative term but only for comparison. It doesn't exist as a concrete object.
Does a substance that heats up have a high or a low specific heat capacity?
An object that heats quickly up has a low specific heat. this is because it can't hold much energy, so the heat is pushed to the outside, making the object feel warm.
Does high speed increase sharpness of an blunt object?
No. A blunt object will be blunt regardless of the speed it travels.
Water has a relatively low specific heat?
The specific heat of water is high. An example of an object with low specific heat would be a metal pan. Since specific heat is the energy needed to raise 1g of something 1 degree Celsius, water would have a high specific heat.
How is specific heat related to thermal energy?
specific heat is the amount of thermal energy needed to raise the temperature of an object. for example, the water on the beach and the sand on the shore are absorbing the same amount of thermal energy from the sun but the water (which has high specific heat) is cold, and the sand (with low specific heat) is very hot.
Difference between thermal energy and heat?
They are the same. Temperature is a measure of "sensible" heat. Latent heat is heat which produces a change in state with no change in temperature. Sensible heat is heat that produces a change in temperature without a change of state. Heat, heat energy, and thermal energy are the same thing, it is measured in Joules, calories or British Thermal Units (btu).Example: Placing a hot object in ice (at the freezing point), the object gives up heat to the ice causing the ice to melt, the temperature of the object decreases to the temperature of the ice, the ice melts, changes state, until the object reaches the temperature of the ice and water. The heat given up from the object affected it's sensible heat (temperature), the heat absorbed by the ice changed it's state, latent heat, but not it's temperature or the temperature of the liquid water. This is an exchange of thermal energy from a high energy state to a lower energy state.Another AnswerThe term, 'thermal energy' is obsolete. It has long been replaced with the term, 'internal energy'.Internal energy and heat are different.Internal energy is the sum total of all the energies associated with the vibration of the molecules/atoms that form a body.Heat is energy in transit from a warmer body to a cooler body. Heat is closely associated with work, which is energy in transit from one form into another. The differencebetween work and heat represents the change in a body's internal energy.
