ultra violate radiation Flashcards
1
Q
where does ultra violate radiation come from
A
direct sunlight
2
Q
what does uv radiation do to some plastics
A
uv radiation causes some plastics such as white pvc to degrade
3
Q
how does uv radiation damage some plastics
A
the radiation breaks down the plastics polymers causing it to no longer be flexible making it become brittle and break easily
4
Q
should white pvc be used outside in the sun
A
no as the sun light with cause the plastics polymers to break down making it not flexible and break easily
5
Q
what plastics are used outside
A
black plastics treated to withstand uv radiation
or upv
6
Q
what is upv used for
A
guttering, window and window sills
