2. Aim: What are some of the results of Earth’s Motions? I. Earth’s Motions A. Rotation (Spinning) 1. Day and Night Why does the sun rise in the east and set in the west?

3. c. The sun moves from east to west _____ degrees per hour. d. Rises in the ___________ and sets in the _________. a. Earth rotates from west to east, causing objects in the sky to appear to be moving from east to west. b. Apparent Motion – the motion an object appears to move, but does not actually move in that direction or does not move at all.

4. B. Revolution 1. One Earth year (365 ¼ days) – how long it takes Earth to orbit the sun once. http://www.classzone.com/books/earth_science/terc/content/vi sualizations/es0408/es0408page01.cfm?chapter_no=visualizat ion

5. 2. Seasons

6. 1. Seasons are a direct result of the relative position of the sun in the sky at different times of the year and also due to Earth’s tilt (23.5 o )

7. 2. 1st day of Summer (Summer Solstice) June 21st a. Longest day in Northern Hemisphere b. 23.5 o N (Tropic of Cancer) has sun directly overhead (90 o ) 3. 1st day of Winter (Winter Solstice) December 21st a Shortest day of year in Northern Hemisphere b. 23.5 o S (Tropic of Capricorn) has sun directly overhead

8. 4. The Equinoxes (Autumnal Equinox and Vernal Equinox) September 21st and March 21st a. 12 hours of daylight and 12 hours of darkness b. Sun is directly overhead at the equator