FIRST ASTRO 101 EXAM. QUESTIONS WITH 100% CORRECT ANSWERS.

Photon a particle of light with wavelength and frequency and thus energy Electromagnetic spectrum the range of wavelengths or frequencies over which electromagnetic radiation extends. Gamma rays Electromagnetic waves with the shortest wavelengths and highest frequencies Radio waves Electromagnetic waves with the longest wavelengths and lowest frequencies Emission spectrum a spectrum of the electromagnetic radiation emitted by a source. a gas is heated up to show this Absorption spectrum a spectrum of electromagnetic radiation transmitted through a substance, showing dark lines or bands due to absorption of specific wavelengths. white light is passed through a gas to show this Continuous spectrum the emission of a continuous range of frequencies of electromagnetic radiation Spectral lines The wavelengths where a specific element can absorb or emit light Electrons negatively charged particles that have different energy levels Energy levels the possible energies that electrons in an atom can have