GEOL 1060 Global Change: An Earth Science Perspective
Unit 7 Explaining Past Warm Times. Little Ice Age and Volcanism and the peak
Of the Early Holocene
The Holocene (present interglacial warm timesthe past 10,000 or so years)
What kinds of proxy e
Geology lecture 9/3/13
What factors control Earths temperature
o The Sun (most important variable when determining Earths temp.)
o Greenhouse effect
o Albedo Biosphere (role in the water cycle and changes albedo)
o Distance of the planet from the sun
Geology Lecture 9.5.13
*The flux of solar radiation at the top of Earths atmosphere mostly depends on
the Earths distance from the sun.
o Proportion of solar radiation reflected (planetary albedo) this on average is
about 30%, mostly from clouds.
Geology Lecture 9.10.13
o As a solid (or liquid) is heated, extra energy is required to get it to change
state; this consumes energy.
o When a gas or liquid cools, as it changes to a liquid or solid it releases the
exact same amount of energy
Global Change- changes in the planetary system. Change is beyond the normal
range of variability on human timescales. Noticeable change in 100 years.
System: an entity, composed of inter-related parts, that function as a complex
Dr. Aiken SEWL 2020
November 4th 2013
Comparison and Contrast
The United States of America is a country of Immigrants. Individuals from all
over still presently flock to this country. One of the largest immigrant demographics is
Hispanic. They have no lar
Student ID: 101230312
GEOL 1060/Professor Miller
Final Extra Credit
North American megafaunal extinction (why did all those big animals disappear?):
climate or human activity?
There are two ideas on how the North American megafaunal went extinct. The Firs
2nd Hour Exam
Circulation of the Liquid Earth
Convergence and Divergence
o Convergence- the inward moving of two air masses onto a low pressure
o Divergence- the outward moving of air
Upwelling and Downwelling
o Upwelling- brings nutrients from the b
Hour Exam 1 Vocab list
1. System: an entity, composed of inter-related parts, that function as a complex
2. Components- part of a system matter (volume, mass) energy (heat, radiation),
attribute, (temperature, pressure) or a subsystem.
Geology Lecture 9.17.13
Circulation of the Atmosphere- Permanent vs. Seasonal Contrasts
Deserts, the hot air doesnt quite make it to the poles and it rains
all the time at the equator.