Ozone Notes

Where is ozone formed?

stratosphere

what is ozone’s formula

O3

What do CFCs and Halocarbons (halons) do to stratospheric ozone

break it down

UVA

Longest wavelength and lowest energy

UVA and the Stratosphere

All UVA passes through the ozone .

UVB

Wavelength and energy in between UVA and UVB

UVB and Stratosphere 

When UVB hits ozone molecules, it doesn’t have enough energy to split anything up and the ozone absorbs MOST of the UVB. Ozone is the only known gas to absorb UVB.

UVC

Highest energy and shortest wavelength

UVC and the Stratosphere

when the UVC light hits O2 molecules in the stratosphere, it breaks them apart into two O molecules. The O molecules then find an O2 to react with and make O3.

Montreal Protocol 

International agreement related to ozone depletion. Nations agreed to cut CFC production in half.

Chemical formulas of stratospheric ozone breakdown

CFCL3+UV→ Cl+CFCL3

Cl+O3→ ClO+O2

CLO+O→ Cl+O2

2 human health impacts of ozone depletion

Throat pain and coughing

2 environmental impacts of ozone depletion

More UV gets through to the atmosphere (leads to skin cancer and stuff and damage to ecosystems/aquatic life)