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23 terms

Geology chapter 14

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anthropogenic
The _____ is the realm of human activity.
green house effect
The radiative balance between incoming and outgoing energy is moderated by the _____.
exentricity, tilt of earths axis, and wobble
Which variations in Earth's orbit have an effect on Climate?
100,000 years
Eccentricity has a period of approximately _____.
water vapor
Which is the most important of the naturally occurring greenhouse gases?
21 thousand years ago
The peak of the last Ice Age, when glaciers blanketed much of North America, was _____ years ago
Earth-Moon tidal gravity
Which of the following does NOT have a known effect on Earth's climate?
a) Earth-Moon tidal gravity
b) greenhouse effect
c) eccentricity of Earth's orbit
d) tilt of the Earth
e) precession (wobbling) of Earth's axis
shrinking with glaciers, reduction sea ice, increase temp in arctic, changes in animal migration
Evidences of recent climate change are found in _____.
carbon dioxide
The most probable cause of anthropogenic warming in the foreseeable future is the increase in _____.
tilt of earths axis
_____ is the astronomical motion considered by Milankovitch as most related to the seasons.
T
Climate is the average weather conditions of a location or region over time.
T
Global warming refers to present-day warming of the world's climate that most scientists believe is likely to continue and is, at least, partly caused by human activities.
T
The term albedo refers to the reflectivity of a surface as a percentage of the total reflected radiation.
T
Paleoclimatology is the scientific study of ancient climates.
F- know for sure
Claims that past Earth climates were different from today are just speculations.
T
Death Valley, California was almost entirely under water during the last ice age.
T
Scientists commonly use variations of the Köppen system to describe the present-day distribution of climate zones.
T
Earth emerged from the last ice age about 10,000 years ago.
T
Milankovitch cycles are the combined influences of astronomical-orbital factors that produce changes in Earth's climate.
F- one of many
Greenhouse gases entirely control global climate.
T
Fossils of tiny sea creatures called foraminifera, which once lived in surface waters, equilibrate with the water around them, preserving a chemical record of past climatic changes
T
The Medieval Warm Period was an episode of mild climate during the Middle Ages.
T
The Little Ice Age was characterized by unusually snowy winters, cool, wet summers, and expansion of sea ice in the North Atlantic.