Question

question 25
by using the method of ________we can know how much of each element is in a star because the chemical elements present in the atmosphere of the star create absorption lines.
○ spectroscopy
○ telescopy
○ seismology
○ none of these

Explanation:

Spectroscopy is a method that analyzes the absorption and emission of light by substances. In astronomy, it is used to study the chemical composition of stars. Each element has a unique set of absorption lines in its spectrum. By analyzing these lines, astronomers can determine the elements present in a star's atmosphere and their abundances. Telescopy is mainly about observing celestial objects using telescopes, not specifically about determining chemical elements. Seismology is the study of earthquakes and the Earth's interior, which is not relevant here.

Answer:

spectroscopy