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18.1 Chemistry
Vocabulary Words
Question | Answer |
---|---|
electromagnetic waves | transverse waves consisting of changing electric fields and changing magnetic fields |
electric field | a field in a region of space that exerts electric forces on charged particles; a field produced by electric charges or by changing magnetic fields |
magnetic field | a field in a region of space that exerts magnetic forces; a field produced by magnets, by changing electric fields, or by moving charges |
electromagnetic radiation | the transfer of energy by electromagnetic waves traveling through matter or across space |
photoelectric effect | an emission of electrons from a metal caused by light striking the metal |
photons | a packet of electromagnetic energy |
intensity | the rate at which a wave's energy flows through a given unit of area |