Atomic emission and absorption spectrum

What is the purpose of a spectroscope?

• To emit light of specific wavelengths.

• To absorb energy in a gaseous state.

• To separate light into its individual colors.

• To identify unknown samples.

What is seen in an emission line spectrum?

• Dark lines at random wavelengths representing absorbed light.
• Bright lines at specific wavelengths representing emitted light from atoms or molecules.
• Continuous spectrum with no distinct lines.
• Only a single bright line at a broad range of wavelengths.

What is seen in an absorption line spectrum?

• Only a single bright line in the spectrum.
• Bright lines on a dark background.
• Dark lines superimposed on a continuous spectrum.
• A uniform color spectrum without lines.

What does the wavelength of a color describe?

• The distance between successive peaks of the electromagnetic wave associated with that color.
• The temperature of the light source.
• The intensity of the color's brightness.
• The speed of light in a vacuum.

How is an absorption line spectrum produced?

• An absorption line spectrum is produced when light passes through a cooler gas that absorbs specific wavelengths.
• An absorption line spectrum is produced by a hot gas emitting light.
• An absorption line spectrum occurs when light is reflected off a solid surface.
• An absorption line spectrum is created when light passes through a vacuum.