science quiz, Oct 8 Flashcards
What kind of particles does seawater put in the air?
salt particles
What kind of particles are blown by the wind?
mold and plant pollen
What else produces particles?
soil erosion, fires, volcanos
What allergy is caused by pollen?
Hay Fever
What is the pollen count?
average number pollen grains in a cubic meter of air.
What gives smoke its dark color?
particles of soot from burning fuel.
What kind of smog to sunny cities get?
photochemical smog
What is photochemical smog?
smog created by sunlight and chemicals
What chemicals in fossil fuels causes smog?
hydrocarbons and nitrogen oxides
What in coal gets in the air and causes acid rain?
sulfur oxides
After reactions, acid rain contains
nitric acid and sulfuric acid
How can you see the effect of acid rain in a city
Damages buildings and statues
How can you see the effect of acid rain in the country?
Harms trees (also kills fish and amphibians)
What have governments done to improve air pollution?
pollution control devices on cars and scrubbers (filters) in smoke stacks at factories.
How has air quality changed over the past 30 years?
better
What did London stop burning to reduce smog?
coal
What words does smog come from?
smoke and fog
What does smog look like in a city?
a brown haze in the air
What symptoms does air pollution cause?
dizziness, headaches, eye nose throat irriation, lung disease, chest pain
WHAT CAUSES MOST AIR POLLUTION?
burning fossil fuels.
What is air pollution
It is harmful substances in the air. It is the result of the burning of fossil fuels (like oil, coal, gasoline and diesel fuels).
What are pollutants
Harmful substances in the air, water or soil
What are particles
Things bigger than molecules in the air
What is photochemical smog
It is the brown haze in the air of cities. It is light mixed with chemical pollution.
