PHSC102 Midterm study Guide Questions and Answers

PHSC102 Midterm study Guide Questions and Answers What are the Steps to the Scientific Method? - Answer-Step 1- make an observation, pose a question or problem Step 2 - make a hypothesis (an educated guess) Step 3 - experiment - hypothesis must be testable and reproducible Step 4 - Conclusion - Results The study of the Universe. - Answer-Astonomy Totality of all space, time, matter, and energy. - Answer-Universe Radius of Earth? - Answer-6378 Km Distance from Earth to the Sun = - Answer-1 Astronomical Unit Distance light travels in one year - Answer-Light year Several galaxies bound together by gravity - Answer-Galaxy cluster Scientific Method that can be used to test hypothesis. Ex. Biology, Physics, Chemistry, Astronomy - Answer-Science Scientific method that can not be used. Ex. Astrology, Alchemy - Answer-Pseudoscience A grouping of stars by humans into recognizable patterns. - Answer-Constellations Northernmost point of celestial sphere is? Southernmost point is? - Answer-Summer solstice; Winter solstice Points where path cross celestial equator are ______ and ______. - Answer-Vernal and autumnal equinoxes. The 13 constellations that the Sun moves through during the year are called _____. - Answer-Zodiac Why do we have seasons? - Answer-Tilt, because this gives us a combination of day length and sunlight angle.