Human impact 2

Question 1

____is responsible for 50% of the total temperature increases in the Artic from 1890 to 2007. Since 1890 the temp in the Arctic has risen ___degrees Celsius, linking black carbon to nearly an entire degree rise in Celsius

Answer 1

Black carbon
1.9degree

Question 2

Habitat Change

Global warming

Atmospheric contaminants?

Answer 2

carbon dioxide
Black carbon
methane
nitrous oxide
nitrogen trifluoride
chlorofluorocarbons
sulphur dioxide
radioactivity

Question 3

Nitrogen trifluoride is

Answer 3

industrial gas used in semiconductor manufacture(phones)

radiative efficiency and global warming potential relative to a molecule of carbon dioxide= 17,200 times

Question 4

Chlorofluorocarbons(CFC) are

Answer 4

Are non-toxic, nonflammable, “inert”-non-reactive solvent that is used in refrigerant and aerosols.

In the atmosphere ultraviolet radiation sticks CFC and causes a Cl atom to break away, the Cl molecule collides with an ozone molecule(O3). Cl takes a single oxygen atom to form monooxide. A free oxygen atom stills the single O on Cl and the chlorin is released to destroy more ozone.

Question 5

The ozone is a natural atmospheric gas that is formed in stratophere___elevation. They absorbs ___from the sun

Answer 5

20kM
ultra-violet radiation from the sun

Question 6

Ultraviolets

UV-C
UV-B
UV-A

Answer 6

UVC(<290)
UVB(290-320)
UVA(320-400nm)

Ozone absorbed 99% of UBC and 50% UVB

Question 7

Effect of UV radiation on whales?

Answer 7

Since whales need to surface for air get sunburnt and the thinning of the ozone layer may pose a risk to the health

Question 8

In 2020 and 2021 the Antarctic had the two largest ozone holes on record.Why?

Answer 8

Australian wildfires 2020 and the eruption of LA Soufriere in 2021

Question 9

What is different with Sulphur dioxide then the other atmospheric containments?

Answer 9

Rather then increase global warming it counteracts it but produces smog

Question 10

Burning fossil fuels rich in___results in increased acidity of precipitation. This leads to

Answer 10

sulphur

a major loss of forest and death aquatic ecosystems in lakes of northern hemisphere

loss of cultural history

Question 11

The World Health Organization has set healthy level of air quality index a t 25 micrograms/m3, ‘bad’ air at____and “hazardous” at____

Answer 11

300
500
ex. Kelowna 2018-426 from forest fires
Beijing 2012-700 from industry
New Delhi-836