What do black lines on a spectrum produced by a spectroscope indicate

Answer 1

The black lines observed in a spectrum produced by a spectroscope are typically known as absorption lines. These lines indicate specific wavelengths of light that have been absorbed by a substance (often a gas or a cooler solid) in the path of the light source. When white light passes through a cooler gas or a material, certain wavelengths are absorbed by the atoms or molecules in that medium.

The result is a spectrum that has dark lines superimposed on a continuous spectrum, which corresponds to the absorbed wavelengths. Each element or molecule has a unique set of energy levels, and therefore, a unique pattern of absorption lines. This phenomenon is used in various fields, including astronomy and chemistry, to determine the composition of stars and other celestial bodies by analyzing the light they emit or absorb.

In summary, black lines in a spectrum indicate the presence of specific elements that are absorbing certain wavelengths of light, providing valuable information about the composition of the material generating the spectrum.

Answer 2

A The intensity of a light an element emits
B wavelengths of light absorbed by an element
C The intensity of light an element absorbs
D wavelength of light emitted by an element

Answer 3

The black lines on a spectrum produced by a spectroscope primarily indicate:

B. Wavelengths of light absorbed by an element.

These absorption lines represent specific wavelengths that have been absorbed by the atoms or molecules in a substance, resulting in the absence of light at those wavelengths in the spectrum. Each element's unique electronic structure allows it to absorb light at characteristic wavelengths, which corresponds to the energy level transitions of its electrons.