Astronomy 1010 test 1 - Study guides, Class notes & Summaries

Astronomy 1010: Test 1 already graded A+ 2023/2024

Chapter_03_Moon_Phases_and_Eclipses 1 T​he Moon moves slowly against the background of the constellations. True False 2 A​ny location on the Moon is sunlit for three weeks and is in darkness for one week as the Moon rotates. True False 3 I​n most months, there are no eclipses. True False 4 A​s the illuminated part of the Moon grows larger from new to full, it is said to "wane". True False 5 O​ur calendar divides the year into 30­day periods in recognition...

Astronomy 1010 Final HW Test Questions With All Correct Answers One of the most important earlier steps in understanding stars was to group them into classes called spectral types that could offer clues as to why they are different from one another. Shown here are spectra of some main-sequence stars. Before stars were very well understood, they were classified into an order that was based on the relative strength of hydrogen absorption lines, marked by arrows the image shown. Look at the ...

Astronomy 1010 Test Questions With Complete Solutions Consider Hubble's Discovery of the expansion of the universe, how is is interpretation justified? - CORRECT ANSWERS Distant galaxies are moving away from us faster than nearby galaxies with a velocity proportional to the distance which means the farther away the galaxy, the faster it is recieding how does this tie in with olbers paradox? - CORRECT ANSWERS Olbers paradox says the sky should be infinit...

Astronomy 1010 Final TEST QUESTIONS WITH 100% COMPLETE SOLUTIONS Which two energy sources can help a star maintain its internal thermal pressure? - ANSWERS Nuclear fusion and gravitational contraction What is the source of luminosity for protostars that have not yet become hot enough for fusion in their cores? - ANSWERS Gravitational energy released by infalling matter What can we learn about a star from its life track on an H-R diagram? - ANSWERS What surface temperature...