Question

How are scientists able to use absorption spectra to determine which elements are present in unknown stars?

Answer 1

Answer:

Each element has its own unique atomic emission spectrum. You can look at the spectra and identify which elements are present.

Explanation:

When an atom absorbs energy, its electrons jump to higher energy levels. Then they jump back down again. Each jump corresponds to a particular wavelength of light.

There are many possible electron transitions for each atom. Each transition has a specific energy difference. This collection of transitions makes up an emission spectrum. These emission spectra are as distinctive to each element as fingerprints are to people.

Thus, scientists can use atomic spectra to identify the elements in them