FINALS: LESSON 11 - Climate Change Flashcards
A change in the statistical distribution of weather patterns when that change lasts for an extended period of time.
Climate change
Effects of climate change
Glaciers have shrunk
Plant and animal ranges have shifted
Trees are flowering sooner
Global temperature rise
More intense heat waves
Water acidification
And extreme events
One manifestation of climate change
GLOBAL WARMING
Refers to the increase in the average temperature of the Earth’s near-surface air and oceans in recent decades and its projected continuation
GLOBAL WARMING
Refers to recent warming and implies a human influence
GLOBAL WARMING
CAUSES OF CLIMATE CHANGE
Mining
Wrong practices in agriculture (like burning of crop)
Illegal logging
Burning of fossil fuel
Deforestation
Too much car that emits carbon monoxide and carbon dioxide
And producing industrial waste
THE GREENHOUSE GASES
Water vapor (H2O)
Carbon dioxide (CO2)
Ozone (O3)
Methane (CH4), and Chlorofluorocarbon (CFCs)
Effects of greenhouse gases
They allow light, infrared radiation, and some ultraviolet radiation from the sun to pass through the troposphere.
Small amounts of heat trapping gasses play a key role in determining the Earth’s average temperature and thus its climates.
greenhouse gases
Greenhouse Effect: Natural trapping of heat in the ________
troposphere
Greenhouse Effect
: First proposed by Swedish chemist ___________ in 1896, has been confirmed by numerous laboratory experiments and atmospheric measurements.
Svante Arrhenius
Greenhouse effect: the earth would be a cold and lifeless planet with an average surface temperature of _____
-18℃
Greenhouse effect is caused by human activities:
burning fossil fuels, agriculture, deforestation, and use of CFCs.
Carbon dioxide is responsible for _____% of the global warming from greenhouse gases produced by human activities since pre-industrial times.
50-60
The main sources are fossil fuel burning: coal, oil, and natural gas (How much percent?)
75%
land clearing and burning (How much percent?)
25%
is nevertheless the main driver of the greenhouse effect.
Carbon dioxide (CO2)
Because of this, the layer of greenhouse gas is getting thicker, which is, in turn, making the Earth warmer.
Carbon dioxide (CO2)
contribute to global warming in the troposphere and deplete ozone in the stratosphere.
Chlorofluorocarbon
The main sourcesof CFCs are
leaking air conditioners and refrigerators, and evaporation of industrial solvents.
is produced when anaerobic bacteria break down organic matter in moist places that lack oxygen.
methane
Methane concentration: moist places that lack oxygen includes
swamps and other natural wetlands, rice paddies and landfills, intestinal tract of cattle, sheep, and termites.
can trap heat in the troposphere and deplete ozone in the stratosphere.
nitrous oxide
Nitrous oxide is released from
nylon production, burning of biomass and nitrogen fertilizers in soil, and livestock wastes.