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Generally, yes. For example, a hot coil may emit infrared or even red light, and hot iron glows. When cool, however, they do not emit light. The reason is that electrons are given more energy from the heat, so they raise in their location from the atom, and when they return to a stable location they give off light.
Wiki User
∙ 16y ago
Wiki User
∙ 11y agoAn object that's cooler than its surroundingsabsorbsmore radiation than it emits.
Wiki User
∙ 10y agoA hot object emits more radiation from each unit of its surface area
than a cold one does.
Wiki User
∙ 6y agoNo, hotter objects emit more radiation. The amount of power emitted as radiation is approximately proportional to the fourth power of the absolute temperature.
Wiki User
∙ 13y agoLess!
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What type of radiation does the earth emit?
Its the thermal energy that the Earth emits. Radiation is essentially another word for heat. There is also solar radiation which is simply the heat from the sun. The Earth actually emits far less thermal energy than what is taken in from by the sun and absorbed into the atmosphere. On the other hand there are planets like Jupiter whose surface temperature is mostly comprised of heat from thermal energy instead of solar radiation.
When causes heat or the transfer of energy from one object to another?
There are basically three methods of heat transfer; what causes the heat transfer differs in each of the three methods. Conduction: Atoms/molecules simply bump into one another, transferring energy. Convection: Larger amounts of liquids or gases move up if they are hotter, because they are less dense. Or they move down if they are colder, because they are more dense. Eventually the heat will be transferred by conduction as well, or the substances become mixed. Radiation: Any object emits electromagnetic radiation according to its temperature. This can be absorbed by other objects.
Why does water cool faster in the beieging then at the end?
In the beginning of what ? At the end of what ?Do you mean "Why does hot water cool faster than cool water ?" ?Because the rate at which heat passes from a warm object to a cool objectdepends on the difference in their temperatures. So, as the warm objectbecomes less warm and the difference in their temperatures becomes smaller,the rate at which heat flows between them also becomes less.
When an object cools its particles lose energy and as the space between particles decreases the object does what?
State Changes If you give the particles energy; or take energy away from them; then you can change their state. If you heat up a solid - you give it some energy. This causes the particles to move more and the solid to change into a liquid, or melt. If the liquid is heated then it may evaporate and turn into a gas.
Is a subordinate object is of less importance than a dominant object?
A subordinate object is of less importance than a dominant object.TrueFalse
When a nucleus emits radiation it becomes?
it becomes less energetic .
Does polar ice cap emit energy?
Everything emits energy (radiation). Ice, less so than most other natural surfaces.
Is it true that two otherwise identical objects have temperatures of 1000 K and 1200 K respectively The object at 1200 K emits roughly twice as much radiation as the object at 1000 K?
Yes, more or less. The power radiated is proportional to the 4th. power of theabsolute temperature; 1200 is 1.2 times as much as 1000, and 1.2 to the fourthpower is a bit more than 2.But the emitted radiation comparison is per unit of surface area, not for the whole object.
Describe two ways that the earth is different from the sun?
The earth is smaller, cooler, greener, wetter, less massive, and more dense than the sun. It emits less electromagnetic radiation, and rotates on its axis 30 times as fast as the sun.
Can thermal energy be cool when its hot?
Yes. But a cooler body has less energy than a hotter object
Is a prius green?
The Prius emits less CO2 than a similarly sized conventional vehicle but still emits CO2
Why do the coldest temperatures occur over large land masses far north?
Because land masses emit radiation causing the land to cool. Land cools quicker than water. The farther north you go toward the poles the less direct sun radiation you receive therefore the heat for the sun is less intense. the combination of earth emitting radiation and less intense solar radiation causes the higher latitudes to be colder.
What type of radiation does the earth emit?
Its the thermal energy that the Earth emits. Radiation is essentially another word for heat. There is also solar radiation which is simply the heat from the sun. The Earth actually emits far less thermal energy than what is taken in from by the sun and absorbed into the atmosphere. On the other hand there are planets like Jupiter whose surface temperature is mostly comprised of heat from thermal energy instead of solar radiation.
Do ice cubes emit infrared radiation?
No, ice emits thermal radiation. It just emits less than so called room temperature. You need to get down to absolute zero, around -273C, to stop the emission of thermal radiation, which is caused by thermal activity.
Why a can of soda pop explodes if left in the sun?
Because your hand is tranferring heat (fast moving molecules/atoms) to an object with slow paced molecules/atoms. Your hand is giving away energy, to an object with less energy, which is why you feel less heat, or cold.
When causes heat or the transfer of energy from one object to another?
There are basically three methods of heat transfer; what causes the heat transfer differs in each of the three methods. Conduction: Atoms/molecules simply bump into one another, transferring energy. Convection: Larger amounts of liquids or gases move up if they are hotter, because they are less dense. Or they move down if they are colder, because they are more dense. Eventually the heat will be transferred by conduction as well, or the substances become mixed. Radiation: Any object emits electromagnetic radiation according to its temperature. This can be absorbed by other objects.
Is it true that cell phones cause brain damage?
Cell phones are non-ionizing which means they don't have enough energy to rip electrons off atoms, or molecules ,and destroy DNA. The radiation in cell phones is somewhat identical to the radiation inside microwaves. If you live an area with better reception your phone emits less microwaves to transmit to a tower and expose you to lower levels of microwave radiation.
