O - Acids, pH, PKa (radiation in, radiation out)

Question 1

what type of radiation does the sun emmit?

Answer 1

visable, UV and IR

Question 2

hoe does the earth warm?

Answer 2

suns radiation is both refected and absorbed by earth
what is absorbed warms the earth and its atmosphere and is then radiated back into space as IR

Question 3

what happens to the earth as it gets heated?

Answer 3

it emits infrared only (not hot enough to emit VI or UV)

Question 4

greenhouse effect

what is the GHG effect?

Answer 4

GHGs trap some of the energy that is emmited from the earths surface preventing it from being re-emited inot space = earth warms

e.g CO2, CH4

Question 5

greenhouse effect

what are the properties of GHGs?

Answer 5

• when they interact with IR their bonds vibrate more vigerously increasing vibrational energy (link to OZ)
• this can be transfered as kinetic energy upon collision with other molecules e.g O2 raising the temp of the air

Question 6

greenhouse effect

what is the natural importance of CO2 and CH4?

Answer 6

theyre both natural components of the air and without them the earth woulf be too cold for life - ˚˚˚ some GHG is good for balance of the earth

since industrial revolution humand=s have impacted this balance

Question 7

what is the IR window?

Answer 7

the IR that water doesnt absorb
> H2O only absorbs certain wavelengths of IR

Question 8

what happens to the IR of the IR window?

Answer 8

it is absorbed by CO2 trapping the radiation
increasing levels of CO2 will increase they amount trappend increasing the greenhouse effect