What are 3 facts about the ozone layer?
Facts About the Ozone Layer
- The word “ozone” means smelly in Greek because the gas has a strong odor.
- CFC molecules are highly stable and can last for up to 100 years.
- One chlorine molecule from a CFC can destroy up to 100,000 ozone molecules.
- Ultraviolet rays can also have bad effects on nature.
What will happen to the ozone layer in 50 years?
The hole in the Earth’s ozone layer is expected to fully heal within 50 years, climate change experts predict in a new UN report. When the ozone layer is weakened, more UV rays can get through, making humans more prone to skin cancer, cataracts and other diseases.
What is 90% of the ozone layer?
About 90% of atmospheric ozone is contained in the stratospheric “ozone layer”, which shields Earth’s surface from harmful ultraviolet radiation emitted by the Sun. In the mid-1970s scientists discovered that some human-produced chemicals could lead to depletion of the stratospheric ozone layer.
What things can destroy the ozone layer?
The main uses of ozone depleting substances include:
- CFCs and HCFCs in refrigerators and air conditioners,
- HCFCs and halons in fire extinguishers,
- CFCs and HCFCs in foam,
- CFCs and HCFCs as aerosol propellants, and.
- methyl bromide for fumigation of soil, structures and goods to be imported or exported.
What will happen if ozone layer disappears MCQS?
Explanation: If the ozone disappears, then ultraviolet from the sun in all of its 3 forms will enter. The three forms are UV-A, UV-B and UV-C.
Can ozone layer be created?
Stratospheric ozone is formed naturally by chemical reactions involving solar ultraviolet radiation (sunlight) and oxygen molecules, which make up 21% of the atmosphere. In the first step, solar ultraviolet radiation breaks apart one oxygen molecule (O2) to produce two oxygen atoms (2 O) (see Figure Q2-1).
Where is the ozone layer most damaged?
lower stratosphere
Most of the ozone that is destroyed is in the lower stratosphere, in contrast to the much smaller ozone depletion through homogeneous gas-phase reactions, which occurs primarily in the upper stratosphere.