“Earth without the ozone layer is like a house without a roof.” – Anonymous.
At St. Lawrence High School and Junior College, the Primary Section students were introduced to the Ozone Layer. The ozone layer or the ozone shield is a region of Earth’s stratosphere that absorbs most of the Sun’s ultraviolet radiation.
Students learnt about the Ozone Layer which acts as a shield for life on Earth. The ozone layer, which lies high in the atmosphere, shields us from the harmful ultraviolet (UV) rays that are emitted from the Sun.
In this session the children learnt about the reasons behind ozone depletion like – human activities causing air pollution that have effectively punched a hole in the layer and the use of gases like chlorofluorocarbons (CFCs) in spray cans and refrigerants, which break down ozone molecules in the upper atmosphere and create ozone holes.
Children also learnt that these holes can cause serious effects on human health and the environment. The hole in the ozone layer is caused by air pollutants.
The students also did an activity in which they coloured a template of the Earth – which is giving a loud and clear message to save the Earth. They drew refrigerators and CFC cans which contain chemicals to depict how these things release harmful chemicals in our environment.
This activity used all practical ways to engage students in learning the basic environmental concepts that they can immediately connect to the world around them.