Lecture 24 Flashcards
In Antarctica what is it surrounded by and what temperature is it?
A polar vortex that is -90 degrees Celsius
In Antarctica where are the clouds formed, what are they formed of and what are they called?
In the upper atmosphere, made up of nitric acid, called Polar Stratospheric clouds or PSC
When did a plane fly from south America through the wall of the vortex?
1987
Describe the 6 week ozone disappearing
polar vortex dissipates and the ozone from other areas will move in
The hold in the ozone will continue until what
All the CFC’s are gone
When will the CFC’s be gone?
Likely not till our kids die
When and what was the Montreal protocol
A UN agreement signed in 1987 that states countries must ban certain Ozone depleting substance by a certain year
True or false; according to the Montreal protocol, all countries will have to ban a substance at the same time?
False; developing countries have longer
CFCs were banned in developed and developing countries when
Developed: 1995
developing: 2010
What are three things that can happen when sunlight hits the earth?
1) Reflect back into space
2) Pass through the Earth
3) Absorbed by the planet
Is it likely that sunlight passes through earth?
No
What is the Black body effect
Objects that are warmer then their surroundings will radiate energy out
The wavelength of the black body effect depend on what
the temperature of the object
Give two examples of Black body
Sun and Earth
The suns surface is about what temperature
5800 K
