Answer:
Continuous Spectrum, a spectrum that contains all wavelengths of light within a specific range, with no gaps or lines. It is produced by a hot, dense object such as a star or a light bulb.
Emission Spectrum, a spectrum that contains bright lines or bands of specific wavelengths, with dark spaces in between. It is produced when light is emitted from a hot gas or plasma, and the specific wavelengths of the lines or bands depend on the elements present in the gas.
Absorption Spectrum, a spectrum that contains dark lines or bands of specific wavelengths, with bright spaces in between. It is produced when a continuous spectrum passes through a cool gas, and the specific wavelengths of the lines or bands depend on the elements present in the gas.