PHSC102 - Midterm study Guide Questions And All Correct Answers

PHSC102 - Midterm study Guide Questions And All Correct 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. How long does it take for the moon to go through its whole cycle of phases? - Answer -29.5 days What does waxing, waning, crescent, and gibbous mean? - Answer -Waxing - getting larger Waning - getting smaller crescent - close to new gibbous - close to full What phases is the Moon for a lunar or solar eclipse? - Answer -Lunar: Full moon Solar: New Moon When Earth is between the Moon and Sun - Answer -Lunar Eclipse When the moon is between Earth and the Sun - Answer -Solar Eclipse Change is an objects apparent position when viewed from two vantage points. - Answer -parallax Who were the first to find the radius of Earth? - Answer -Eratosthenes That fact that Polaris will not always be the pole star is due to: - Answer -precession shifting the celestial pole