Test #3 Flashcards
(37 cards)
Global climate
the long-term trends in weather conditions for the planet
instrumental period
began in 1860, the first year for recorded surface air
temperatures measured by instruments such as thermometers
Proxies
observable and measurable phenomena that indirectly indicate climate change
paleoclimates
proxies are used to understand them
Greenhouse effect
any system where a barrier causes the inflow of
energy to outpace the outflow of energy, leading to a warming of the
interior. Specifically, this refers to the warming effect on Earth due to
atmospheric greenhouse gases that prevent radiant heat emitted from the
surface from escaping into space
Albedo
a term to describe the reflectivity of a surface
Greenhouse gases
atmospheric gases such as water vapor, carbon
dioxide, and other gases that absorb infrared radiation (a form of heat) that rises
from Earth’s surface
Milankovitch Cycles
systematic patterns in the shape of Earth’s orbit, and
the tilt and direction of Earth’s rotational axis over 26,000–100,000-year cycles
Droughts
caused by increased evaporation from warming, are increasing in
frequency, duration, and intensity
Thermal expansion
causes warmer water to expand, contributing 40% to sealevel rise since 1980.
Ocean acidification
happening because the oceans absorb 25% of human caused CO2 emissions
tipping points
occur when sudden changes have a rapid and significant effect on global climate
Hydrocarbons
such as oil and natural gas are made of strands of hydrogen and carbon
molecules derived from the photosynthesis of ancient microscopic organisms in oceans
and lakes.
Conventional reserves
easily obtained oil or gas deposits
Unconventional reserves
deposits that are more difficult to extract
biofuels
which are derived from living things, for warmth, light, and
cooking
proven reserves
the amount of a
resource that can be profitably accessed with current technology and prices
Jevons paradox
affects gains in efficiency. Increased efficiency leads to lower
costs, which leads to new applications for the energy, thereby increasing
consumption
hydraulic
fracturing (fracking)
Prepared by Horizontal drilling which can access more oil and prepares the rock
Tar sands
type of loose-grained rock deposit that contains oil, which is released
through the application of steam and direct heat.
Photovoltaic (PV) solar panels
use sunlight to directly produce electricity They can
be used at many scales, from phones to hundreds of acres on a solar farm
Concentrated solar thermal (CST) plants
use huge mirrors to focus sunlight toward
liquid-filled pipes or a power tower that holds liquid. The heated liquid turns water to
steam, which turns generators to produce electricity
Ethanol
is an alcohol produced by fermenting sugars (those in corn and sugarcane)
which is blended with gasoline
Cogeneration
systems capture waste heat from
power plants and use it as an additional source of heating or cooling