The ozone hole Flashcards
1
Q
In the 1920s
A
Synthetic compounds known as CFCs were developed as refrigerants.
2
Q
CFCs are
A
Essentially non toxic and non reactive and were ideal for use in fridges and cooling equipment,. They also proved a good propellant for aerosol spray cans.
3
Q
CFC consequences
A
Affordable fridges, which offered better food, vaccine and medicine storage, the beehive hairstyles and improved personal hygiene and the spread of graffiti.
4
Q
Early 1970s
A
There was growing concern that CFCs were depleting stratospheric ozone.
5
Q
In 1976
A
They were banned in the USA
6
Q
In 1985
A
British scientists discovered to ozone hole in the stratosphere above Antarctica.
7
Q
Montreal Protocol
A
Of 1987 phased out the use of ozone depleting CFCs.
