Astronomy Chapter 2 Exam with Questions and Answers

Astronomy Chapter 2 Exam with Questions and Answers In which direction does the Earth turn around its axis of rotation ANSWER west to east In which direction do we perceive the sky turning around us? ANSWER east to west What is the Celestial Sphere? ANSWER An imaginary sphere of which the observer is the center and on which all-celestial objects are considered to lie What are the two points that the celestial sphere seems to turn around on? ANSWER - North Celestial Pole and South Celestial Pole How do we define the horizon for any person at any point on earth? ANSWER -Horizon- Point directly over your head and the plane under your feet that touches Earth an where you are standing How do the stars seem to rise and set for someone standing at the equator? ANSWER - Stars rise straight up in the sky in the east or setting straight down in the west For someone living at a mid-northern latitude, (like Mt. Pleasant, latitude 43.5 degrees), where would you find the North Celestial Pole? ANSWER - The North Star is up from the horizon exactly at an angle equal to your latitude So the North Celestial Pole would be at 43.5 degrees How do starts near the North Celestial Pole turn around the pole; clockwise or counter-clockwise? ANSWER Counter-clockwise Make sure you know the correct reason why we have seasons on the Earth ANSWER - We have seasons because the earth is tilted on its rotation axis of 23.5 degrees