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When an electron temporarily occupies an energy state greater than its ground state, it is in an excited state. An electron can become excited if it is given extra energy, such as if it absorbs a photon, or packet of light, ... Electrons do not stay in excited states for very long - they soon return to their ground states,
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imagine.gsfc.nasa.gov/docs/teachers/lessons/xray_spectr...
imagine.gsfc.nasa.gov/docs/teachers/lessons/xray_spectra/background-atoms.html
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When first learning about the structure of atoms, it is common to hear about the electrons being in "orbitals" that have different energies. ... When an electron occupies an energy shell greater than its ground state, it is in an excited state. An electron can become excited if it is given extra energy, such as when it...
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imagine.gsfc.nasa.gov/docs/science/how_l2/xray_generati...
imagine.gsfc.nasa.gov/docs/science/how_l2/xray_generation_atom.html
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If heat is applied directly to one part of a solid object, the electrons become excited. This causes molecular collisions which travel along the object, heating as it passes through. This transfer of heat within a solid is known as conduction.
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www.lanly.com/heating.htm
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Explain that you represent the electrons of a whole bunch of hydrogen atoms and the floor is your ground state. Energy input (in this case light from the flashlight because heat from a bunsen burner is too risky!) can cause electrons to become excited and move to higher energy levels.
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www.sasked.gov.sk.ca/docs/chemistry/unit4chem20.html
www.sasked.gov.sk.ca/docs/chemistry/unit4chem20.html
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Plasma is heated to tens of millions of degrees and electrons, ... Alternatively, an accelerated heavy nucleus can interact with an ambient low-energy proton and become excited to a higher energy level. It continues on at a similar velocity and emits the characteristic gamma ray as it decays back to the ground state.
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hesperia.gsfc.nasa.gov/hessi/brochure.htm
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3) as energy is absorbed electrons become excited (absorb energy and move to higher energy levels) and perhaps ionized (have absorbed enough energy to break free from the electron cloud entirely)
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www.sciencebyjones.com/shells.htm
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Light is absorbed by molecules in about 10-15 seconds which causes electrons to become excited to a higher electronic state. The electrons remain in the excited state for about 10-8 seconds then, assuming all of the excess energy is not lost by collisions with other molecules, the electron returns to the ground state.
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www.turnerdesigns.com/t2/doc/appnotes/998_0050/0050_c1....
www.turnerdesigns.com/t2/doc/appnotes/998_0050/0050_c1.html
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When red light strikes the object, its electrons become excited. When the electrons return to their ground state, they re-emit that red light. Hence, red light is reflected. What happens when light other than red strikes the object?
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answers.yahoo.com/question/index?qid=20081227071553AAMo...
answers.yahoo.com/question/index?qid=20081227071553AAMoGPN
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Understanding how fluorescent light tubes work begins with a basic understanding of how light is produced. ... As some of the moving atoms and electrons make contact with the mercury atoms, electrons become excited, jump to a new orbital, and emit light photons as they return to the original orbital.
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www.streetdirectory.com/travel_guide/135308/technology/...
www.streetdirectory.com/travel_guide/135308/technology/what_is_fluorescent_lighting.html
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