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Learning Objective Answers For Course Reader (DE)

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University of Guelph
Environmental Sciences
ENVS 1060

1 Learning Objectives andAnswers for Geology Professor stated that if we answered all the questions in the learning objectives in the course manual we would be ready for the Exam 1. Name the planets of our solar system and be able to discuss their relative positions and general features - Mercury –orbits sun once every 88 days, rotates slowly once every 59 days. Small, gray to orange in color, covered with craters - Venus – 243 days to complete one rotation, about the same size as earth, very thick atmosphere, composed largely of Sulphuric acid and CO2.Atmosphere traps heat making the surface of Venus the hottest in the solar system. Brownish yellow color - Earth – liquid water on its surface, maintains life, has active plate movement. Rotates every 24 hours and revolves around the sun every 365 days. Has one moon - Mars – half the size of earth, 687 days to revolve around the sun, rotates about the same speed as earth. Very thin atmosphere, which is compromised of mostly CO2. Surface is very cold and is covered with craters, volcanoes and large canyons. Reddish in color. Two small moons. - Jupiter – largest planet in the solar system, orbits sun once every 12 years. Rotates very fast (10 hours). Made up of gas, broken into bands or white, yellow, red, and brown clouds. 63 satellites and four large moons - Saturn – composed mostly of gas, rings, and orbits sun every 12 years and rotates 10hours. Brown yellow butterscotch color - Uranus – revolves around the sun slowly 84 years to complete one orbit. Thick layers of gas, has a fairly uniform blue-green color. Rings, rotates on its side. - Neptune – blue, storm systems, five rings and 13 moons. - Pluto – Dwarf planet, very cold, arguably not a planet 2. Describe how we experience the Doppler effect in everyday life, and discuss what this phenomenon can tell us about the origin of the universe - When a train passes and moves away from us, the sound of the whistle becomes abruptly lower pitched. The sound waves are stretches from the perspective of the listener. Longer wave length lower pitch, shorter wavelength higher pitch. - Evidence for the big bang can be seen in the visible light from objects of our universe. Distant objects appear redder than those closer to us because they are moving away from us faster.Any explosion causes the material around the edges of the explosion to move outward faster than those at the center. Red light has a longer wavelength than other colors and since waves appear stretched, or elongated when we look at distant galaxies we know they are moving away from us faster than those closer to us. Red wavelengths are longest and therefor galaxies that are red are farther away
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