F322-Resources Flashcards
What changes to the Earth may the temperature cause?
~Rivers overflowing
~Drought and disease
~Extreme storms & Hurricanes
~Rising sea levels
What 3 things do greenhouse gases do?
~Absorb Infrared
~Vibrate
~Re-emit the energy
Suggest some alternative uses for CO2?
~blowing agents in foams
~as a solvent to dissolve chemical reactants
~to extract beer flavour from hops
What is be monitoring progress for global warming called?
“Kyoto Protocol”
Name some solutions to environmental problems
-carbon capture and storage (CCS)
~renewable energy sources such as wind turbines or solar panels
Write the equations for Ozone Formation
O2 > 2O.
O2 + O. > O3
Write the equations for ozone maintenance
O3 > O2 + O.
O2 + O. > O3
Overall= O2 + O. <> O3
Write the equations for ozone depletion with Cl radicals
O3 + Cl. > ClO + O2
ClO + O. > Cl + O2
Overall= O3 + O. > 2O2
Write the equations for ozone depletion with NO radicals
O3 + NO. > NO2 + O2
NO2 + O. > NO + O
Overall = O3 + O. > 2O2
Infrared is….
Absorbed by bonds
Ultraviolet….
Breaks bonds
Suggest one possible disadvantage of using a hydrocarbon instead of a CFC
It releases greenhouse gases
Suggest why hydrocarbons are replacing CFC’s
Because they are less damaging to the ozone later due to the lack of Chlorine
State the catalyst in ozone depletion with Cl
The Chlorine radical is the catalyst because it is regenerated in step 2
Why is it important to life on the Earth’s surface that the concentration of ozone in the stratosphere is maintained?
To protect against UV radiation which is harmful to life forms
