Classical they will emit electromagnetic waves (light and radio waves). Quantum effects might limit this since if the electrons are in the ground state (or all lower states are occupied) they can not emit any photons (quanta of electromagnetic waves).
Light wave is an electromagnetic wave, so light waves are a kind of wave. I don't understand what you mean by what waves have the most light waves. It's not possible to emit a combination of different kinds of waves (such mechanical, EM wave, sound wave) from a single source.
A piece of wood is not considered electromagnetic energy. Electromagnetic energy refers to the energy carried by electromagnetic waves, such as light, radio waves, and X-rays. Wood does not emit or interact with electromagnetic waves in the same way that energy does.
Objects that emit light are usually referred to as incandescent.
Well, yes. They couldn't work if they didn't emit electromagnetic radiation in the form of radio waves.
The moon
Light waves do not emit radiation, light waves are radiation.
Yes because they emit or give off light
Classical they will emit electromagnetic waves (light and radio waves). Quantum effects might limit this since if the electrons are in the ground state (or all lower states are occupied) they can not emit any photons (quanta of electromagnetic waves).
Through Radiation
They emit: gamma rays, radio waves, and x-rays. Some stars emit T.V. rays
Light wave is an electromagnetic wave, so light waves are a kind of wave. I don't understand what you mean by what waves have the most light waves. It's not possible to emit a combination of different kinds of waves (such mechanical, EM wave, sound wave) from a single source.
Radio waves do not emit visible light. Only light with wavelengths of roughly 4*10^-7 to 7*10^-7 meters are visible.
Indirectly, by analyzing the light given off by the Sun. Typically, a hotter object will emit electromagnetic waves of higher-energy - on average, because such an object will emit a mix of many electromagnetic waves.
Light bulbs emit light.
Technetium doesn't emit light.
Yes galaxies emit light