Slide 1For Every Season: Tilt, Tilt, Tilt What determines the average temperature of planets? Why are the poles colder than the equator? Why do we have seasons? Image from:…

1.Astronomy The Stars Star cluster NGC 457, the Owl Cluster, in the constellation of Cassiopeia http://www.buytelescopes.com/gallery/view_photo.asp?pid=10298&sg=9&page=32.…

SUN & SEASONS Size of Stuff in the Sky * Eye/brain gauges angular size  alone doesn’t give you true size! Moon & Sun Earth   = 0.5o [Pinky test.] Angular…

SUN & SEASONS Seasons mythology Reasons for Seasons Zeus Hades Persephone Persephone was the Greek goddess of the Underworld and the wife of Hades. Hades fell in love…

Chapter 2 Chapter 2 Planet Earth Solar Energy Energy from the sun. Need for survival. Amount of energy received, changes. Why? Rotation One complete spin of the earth. Takes…