Lesson 11 - Environmental Awareness Flashcards
(38 cards)
▪ strongest typhoon to ever hit the Philippine
▪ killed more than 6,000 people and
displaced 600,000 more
Typhoon Yolanda (Haiyan): 2013
Strongest Typhoons in the Philippines
- Typhoon Yolanda (Haiyan): 2013
- Typhoon Odette (Rai)
- Typhoon Glenda (Rammasun)
will result in more frequent and intense storms
but will also contribute to drying over some land areas.
Increased evaporation
can be a natural process
where temperature, rainfall, wind and other
elements vary over decades or more
Climate Change
refers to long-term shifts in temperatures
and weather patterns
Climate Change
caused by burning fossil fuels that add heat-
trapping gases to the Earth’s atmosphere
Climate Change
since the 1800s, human activities have
been the main driver of
Climate Change
▪ Climate change leads to extreme weather events, including heatwaves, floods,
and storms, disrupting ecosystems and agriculture.
▪ Rising sea levels and melting glaciers threaten coastal communities and
biodiversity.
➢ warming temperatures
➢ changes in precipitation
➢ increases in the frequency or intensity of some extreme weather events
➢ rising sea levels.
Environmental Impacts
▪ refers to the long-term warming of the planet
▪ generally defined as the general warming effect
caused by greenhouse gases in the atmosphere
▪ greenhouse gases absorb infrared radiation and
radiate it to the Earth’s surface as heat →
warming the Earth
Global Warming
is a term that describes how natural gases in the earth’s atmosphere reduce the amount of heat escaping from the earth into the atmosphere.
Greenhouse Effect
The more of these gases there are,
the more the Earth heats up.
Causes of Global Warming
Greenhouse gases
Deforestation (also pointed as a culprit)
▪ naturally occurring gases such as CO2, CH4, and NOx
▪ man-made gases such as CFCs, HFCs, PFCs, and SF6
Greenhouse gases
CO2 is released to the air, increasing the long-wave radiation & trapped heat
Deforestation (also pointed as a culprit)
Melting of ice also affect _____ or the ratio of the light reflected by
any part of the Earth’s atmosphere
ALBEDO
has the highest albedo level
snow
causes dilution of salts in the oceans and
disruption of natural ocean currents
result to extreme changes in temperature
affect global and regional climate patterns
Melting of ice caps in the polar regions
• Decrease in number of polar bears due to
starvation and loss of habitats.
• Forests are also damaged as spruce bark
beetles chew on spruce trees which normally
appear on warm months.
• Sea levels rise affecting low-lying coastal areas
where large populations dwell.
Changing wildlife adaptations and cycles
▪ Migration distances greatly increased
which possibly displace disease-
carrying insects, crucial pollinators, and
crop pests into new places
▪ Greater distances also mean greater
lengths to go for animals to survive
Spread of diseases
A thin ozone layer is maintained at the ______ as Earth’s protection from the sun’s harmful
UV rays.
stratosphere
o Cl radical destroys ______ ozone molecules
o Br radical is _____ times more reactive than Cl
100,000
100
- affects fertilization of fish eggs and kill adult fishes; low biodiversity
- soil organisms and other microorganisms die; inhibit decomposition and
nutrient recycling - loss of the ability of leaves to retain water
- bioaccumulation of heavy metals in plants
Effects of Acidification