Topic 3.2 - Ozone Depletion

Ozone

A highly reactive gas composed of three oxygen atoms, with only 3 molecules for every ten million molecules of air.

Ultraviolet (UV) Rays

The most common and harmful rays from the sun that can create or destroy ozone gas.

Ozone Layer

Protective layer of gas consisting of O3 molecules, crucial for shielding the Earth from harmful UV radiation.

Ozone Depletion

The weakening of the ozone layer due to human activities like releasing CFCs, leading to harmful effects like skin cancer and environmental damage.

Chlorofluorocarbons (CFCs)

Chemical compounds used in various products like refrigerators and aerosol sprays, contributing to ozone depletion.

Ozone-Oxygen Cycle

Involves free radicals like chlorine acting as catalysts to decompose ozone, speeding up the process of ozone destruction.

Montreal Protocol

An international agreement aimed at discontinuing the use of harmful chemicals affecting the ozone layer and replacing them with ozone-friendly alternatives.

Solutions for Protecting the Ozone Layer

Measures like reducing CFC use, carpooling, and proper disposal of chemicals to prevent further ozone depletion.

Effects of Ozone Depletion

Result in diseases like skin cancer, disruptions in food chains, and adverse impacts on plant and ocean life.

Loss of the Ozone Layer

Concerns include increased sunburn incidence, skin cancer cases, and environmental damage, affecting both human health and ecosystems.

Stratosphere

Location of the Ozone Layer.

UV Rays

Harmful rays emitted by the sun.

UV A Rays

Most common and cause skin aging and wrinkling.

UV B rays

Rays that cause sunburns, cataracts and the immune system.

UV C Rays

The most dangerous, are absorbed by our one layer.