Question

Help me with the following two questions about astronomy. Thank you

drag-and-drop environment to put the correct words in the right places. (Please Note: Not all draggable items will be u Draggable Items magnitude faintitude apparent brightness brighter Because distance causes light to spread out and get dimmer, astronomers need to distinguish between the total energy output of a star, called its and how bright a star looks from Earth, called its For historical reasons, astronomers still use a system for how bright a star looks from Earth, which assigns a number to each star called its The larger this number, the the star. luminosity smaller spectral type fainter prominence

Answer 1

Because distance causes light to spread out and get dimmer, astronomers need to distinguish between the total output of a star, called its luminosity and how bright a star looks from Earth, called its apparent brightness. For historical reasons, astronomers still use a system for how bright a star looks from Earth, which assigns a number to each star called its magnitude. The larger this number, the fainter the star. Spectra are like the barcodes used at the supermarket checkout; each pattern can be scanned to provide information about the star. The main reason spectra of different starts are different is that the stats have different Cannon characteristics. While we know that each element leaves a different pattern in the spectrum, mostly the stars have roughly similar compositions, with only a few exceptions. The most common atom in all stars is hydrogen. Astronomers use the patterns in the spectra of stars to sort all-stars into categories called spectral classes, the hottest stars are given the latter 0. Objects which are not hot enough for hydrogen fusion take place in their cores are called Brown Dwarfs.

Answer 2

For the second question, everything is correct except the first option. The correct answer will be 'temperatures' in place of 'cannon characteristics'. Good luck for an A!