Why do things that are black get hotter than things that are lighter?
535775
Without going into the complexities of molecular theory, things APPEAR black because they absorb many wavelengths of visible light/EM radiation including infrared (heat) thus making them hotter.  Because everything is absorbed, no light is reflected and you see no light or darkness/black.  The excess absorbed energy manifests itself in many ways such as adding to the vibration of the molecules or heat.\n\nWITH slightly more detailed quantum theory:\n\nThe energy is absorbed by the electrons of the atoms that make up the black material and excite them from a ground level to a higher level or energy state.   From quantum mechanics, we know that these electrons will only absorb light of a given frequency/energy - that which corresponds to just enough energy to go from level 1 to level 2 to level 3 and so on - and will not absorb other frequencies (hence why we have red - green & blue absorption, etc).  In these black materials it just happens that the differences between all the energy states correspond to most frequencies of visible light giving you dark/black colours or full absorption.  At higher energy states, the atoms and molecules have extra energy which allows them to vibrate more or become hotter.  They're also less stable and reemit this energy in the form of infrared (heat) to get back to the more stable low energy state.
1159227
As a general rule, warm air rises and cool air sinks\nit expands and becomes lighter as the molecules of air move farther apart
887352
BLUE FLAMES ARE HOTTER THAN RED OR YELLOW ONES ♥♥♥
461222
its not just that "heat rises", but that things with lower densities rise above things with higher densities. ice floats in water, helium floats in air, etc.  heat is not an object that can rises, but it is an attribute of particles that affects their density. just like hot air rises, when a flame burns, it produces hot gases that rise. these gases are hot enough to produce light, so we see the light rising with the gases. by the time they have risen above the flame, they are no longer hot enough to give off light, so the flame doesn't go up forever.
744212
take a dark colored cloth and a light colored cloth.expose them to heat or sunlight.u will see that dark colors get hot very quickly than light colored cloth.switch off the source and u will see that the heat is quickly lost by dark cloth than light cloth.
795410
this has to do with the density of air. As the molecules in the air heat up the start moving at higher speeds in all directions, spreading them apart, and as the density decreases, the air rises. With fire this happens at higher speeds.
931030
That should only happen with copper or copper salts.\nIt's the oxidation of the copper in the flame.\nAll elements burn differently, this is the basis of how a spectrometer works.
146829
When the saucepan is heated from below the milk close to the bottom becomes hotter than the milk nearer the top. When the milk becomes hotter it expands and therefore becomes lighter than the colder milk above it. It thus starts to rise towards the surface. At the top surface it is cooled by the cold air above it. As it cools it contracts, gets heavier than the hot milk and sinks down again.
622160
which ever ones' hotter
560278
black absorbs heat, white deflects it
72663
Its a cute question. :-)\nLet me explain it this way.\n\nShadows arent necessarily objects themselves. \nThey are just a patch of surface, which dont recieve direct light from the source (sun, lamp etc), but only recieve the scattered rays of light. \nAnd for this reason, these patches are dimly lit, making it look darker than the surrounding, which in our daily terms is 'black'. :-)
133407
It's because of evaporation.  Whenever something evaporates, it takes energy away from what it's touching, and the temperature goes down.
353023
Radiation caused by temperature is often called "Black-Body Radiation." Perfectly Black Bodies are the best type of objects to absrob heat - as most of us know if you wear a black T-Shirt in the sun, as compared to a white one!\n\nI quote to you a fundamental statement of black-body radiation "The best possible absorber of radiation is also the best possible emitter of radiation."\nThis is because the efficiency of a black body does not depend on whether radiation is being emitted or absorbed.\n\nA black radiator is much more efficient than a white radiator because it can absorb (and therefore radiate) better.
473273
temperature will rise depending on starting temperature, albedo(reflectivity), density, and probably lots of other factors, so there is no set answer.
938353
When heated the electrons move from the ground state to an exicited state.  They are unstable here and return to the ground state giving off energy in the form of a specific color.  Different energy levels will produce different colors
481035
its the other way round. a thing is hot if its molecules are moving with a higher thermal velocity (prop to T^1/2). if you heat something its molecular vibrations go up in turn increasing its temperature.
248011
It's called superheating. I don't quite understand it myself.