Question

1. you analyze a stars light using a spectroscope and see the absorption spectrum shown at the right. what element(s) make up the composition of this star? select all that apply iron helium hydrogen oxygen carbon nitrogen

Explanation:

To solve this, we compare the star's absorption spectrum with the element absorption spectra (from the key). Absorption lines match when the element is present. Typically, stars (like our Sun) have Hydrogen (most abundant) and Helium, and often Iron. But from standard star composition (and typical spectra), Hydrogen and Helium are core, plus Iron (from stellar processes). Wait, but the key's spectra: if the star's spectrum matches Iron, Helium, Hydrogen lines. But in standard star analysis, Hydrogen (Balmer lines), Helium, and Iron (from absorption lines) are common. But since we need to select based on the given key (even if image is partial), the common elements in star spectra: Hydrogen, Helium, Iron. But maybe the key shows Iron, Helium, Hydrogen lines matching. So the correct elements (select all that apply) would be Iron, Helium, Hydrogen (assuming their spectra match the star's absorption lines).

To determine the star’s composition, we compare its absorption spectrum with the element absorption spectra (from the provided key). Elements are present if their characteristic absorption lines match the star’s spectrum. Stars typically have Hydrogen (most abundant, with Balmer series lines), Helium (core element), and Iron (from stellar nucleosynthesis/absorption). Assuming the star’s spectrum matches the absorption lines of Iron, Helium, and Hydrogen (consistent with stellar composition and spectral analysis principles), these elements are selected.

Answer:

Iron, Helium, Hydrogen (select the checkboxes for these options: Iron, Helium, Hydrogen)