9/23/14

Tonight's homework is to complete Part 3 of the Atmosphere and Climate Reflection and read 20.2, 20.4, and 20.6 in Botkin and Keller. There will also be a brief check-in tomorrow about the characteristics of water and the atmosphere tomorrow. There seemed to be a little confusion at different points in class today, so taking a long here may be useful.

Part 1 Data - Maximum Sun altitudes for selected latitudes during the two solstices and equinoxes

Latitude	Spring Equinox	Summer Solstice	Fall Equinox	Winter Solstice
Date	March 21/22	June 21/22	September 21/22	December 21/22
90 °N	0 °	23.5 °	0 °	- 23.5 °
70 °N	20 °	43.5 °	20 °	- 3.5 °
66.5 °N	23.5 °	47 °	23.5 °	0 °
50 °N	40°	63.5 °	40 °	17.5 °
23.5 °N	66.5 °	90 °	66.5 °	43 °
0 °	90 °	66.5 °	90 °	66.5 °
23.5 °S	66.5 °	43 °	66.5 °	90 °
60 °S	30 °	6.5 °	30 °	53.5 °
40 °N	50 °	73.5 °	50 °	27.5 °

Part 2 - Effect of Lamp Angle on Water Temperature (degrees Fahrenheit)

Time (minutes)	Temp of water under lamp at 90 degrees	Temp. of water under lamp at 45 degrees
0	72	73
2	73	74
4	74	74
6	74	74
8	75	74
10	75	75
12	76	75
14	77	75

NOTE: You DO NOT need to graph this data. Ignore that part of the instructions for Part 2.

Part 3 - Why do different regions of the Earth have different climates?