NATURAL SCIENCE EXAM QUESTIONS
WITH CORRECT ANSWERS
Climate change solutions - ANSWER-Cutting fossil fuel use
Improving energy efficiency
Shifting to renewable energy
Reducing deforestation
Using sustainable agriculture
Slowing population growth
Planting and tending trees
We breathe about every 4 seconds, - ANSWER-Which is equivalent to 1,000,000
gallons of air per year and some of what we breathe shouldn't be there and this is called
air pollution
London air pollution - ANSWER-An event that happened in December 2019 52 were a
fog blanket at the city that was more dense than anyone could remember. By mid
morning the air had a choking acid odor that made it difficult to breathe and made
clothes and expose skin filthy in minutes. The most damaging pollutant in the air was
sulfur dioxide from burning coal which oxidized in the air which turned to water droplets
to form sulfuric acid and killed thousands of people.
Even after the clean air act was signed into law - ANSWER-The world health
organization estimates that 4 to 6 million people die each year from causes directly from
air pollution. (Most deaths due to indoor pollution)
Most of the pollutants outdoors come from - ANSWER-Diesel vehicles and open fires
Most of the pollutants indoors come from - ANSWER-Coal and biomass fuels
Can some pollutants come from other countries? - ANSWER-Yes some particles are far
from us and still reach us. African dust that was blown across the Atlantic constitute for
50% of the breathable particles over the city of Miami
Some of these are gases which or from the O zone drifting from eastern Asia into the
US
When does air pollution occur - ANSWER-When there are one or more chemicals in the
air in high enough concentrations to harm organisms and this includes excessive heat
and noise
Where can air pollution originate from natural sources - ANSWER-Forest fires,
volcanoes, pollen, fungi, bacteria
, When did air pollution begin? - ANSWER-It began when we harnessed fire in the Stone
Age and air pollution laws have been in place since 1306 And it wasn't until the
industrial revolution that air pollution seriously begin to affect the health of society
smog - ANSWER-air pollution by a mixture of smoke and fog
photochemical smog - ANSWER-air pollution that forms from the interaction between
chemicals in the air and sunlight
Ex the smog over LA
What are the two major groups of air pollutants - ANSWER-Primary air pollutants &
secondary air pollutants
indoor air pollution - ANSWER-pollution that occurs indoors and there are usually more
indoors than outdoors, because the typical American home could have 20 to 150
hazardous chemicals and concentrations that are 10 to 40 times those that are found
outdoors
outdoor air pollution - ANSWER-Those found in the first 11 miles of the atmosphere and
these can be concentrated in places like tree line streets
Four major categories of air pollutants - ANSWER-The oxides
Volatile organic compounds
Suspended particulate matter
Radioactive substance is
The oxides - ANSWER-Can be made of carbon sulfur and nitrogen which most come
from burning fossil fuels or the use of cars and industry like power plants
volatile organic compounds - ANSWER-Hundreds of volatile compounds evaporate and
enter the air is vapor these include gasoline, paint solvents, cleaning solutions
This is how photochemical smog is made
Suspended particulate matter - ANSWER-Thousands of different types of solid particles
like soot, dust, pollen, and asbestos, lead, and liquid droplets of chemicals like
hydrogen2, oil and pesticides
radioactive substances - ANSWER-Can be gaseous or particulate and a example would
be radon
Input controls - ANSWER-These controls prevent the pollution from being generated in
the first place they are most desirable ecologically and often economically
These may take the form of laws, taxes, economic incentives, and process redesign
WITH CORRECT ANSWERS
Climate change solutions - ANSWER-Cutting fossil fuel use
Improving energy efficiency
Shifting to renewable energy
Reducing deforestation
Using sustainable agriculture
Slowing population growth
Planting and tending trees
We breathe about every 4 seconds, - ANSWER-Which is equivalent to 1,000,000
gallons of air per year and some of what we breathe shouldn't be there and this is called
air pollution
London air pollution - ANSWER-An event that happened in December 2019 52 were a
fog blanket at the city that was more dense than anyone could remember. By mid
morning the air had a choking acid odor that made it difficult to breathe and made
clothes and expose skin filthy in minutes. The most damaging pollutant in the air was
sulfur dioxide from burning coal which oxidized in the air which turned to water droplets
to form sulfuric acid and killed thousands of people.
Even after the clean air act was signed into law - ANSWER-The world health
organization estimates that 4 to 6 million people die each year from causes directly from
air pollution. (Most deaths due to indoor pollution)
Most of the pollutants outdoors come from - ANSWER-Diesel vehicles and open fires
Most of the pollutants indoors come from - ANSWER-Coal and biomass fuels
Can some pollutants come from other countries? - ANSWER-Yes some particles are far
from us and still reach us. African dust that was blown across the Atlantic constitute for
50% of the breathable particles over the city of Miami
Some of these are gases which or from the O zone drifting from eastern Asia into the
US
When does air pollution occur - ANSWER-When there are one or more chemicals in the
air in high enough concentrations to harm organisms and this includes excessive heat
and noise
Where can air pollution originate from natural sources - ANSWER-Forest fires,
volcanoes, pollen, fungi, bacteria
, When did air pollution begin? - ANSWER-It began when we harnessed fire in the Stone
Age and air pollution laws have been in place since 1306 And it wasn't until the
industrial revolution that air pollution seriously begin to affect the health of society
smog - ANSWER-air pollution by a mixture of smoke and fog
photochemical smog - ANSWER-air pollution that forms from the interaction between
chemicals in the air and sunlight
Ex the smog over LA
What are the two major groups of air pollutants - ANSWER-Primary air pollutants &
secondary air pollutants
indoor air pollution - ANSWER-pollution that occurs indoors and there are usually more
indoors than outdoors, because the typical American home could have 20 to 150
hazardous chemicals and concentrations that are 10 to 40 times those that are found
outdoors
outdoor air pollution - ANSWER-Those found in the first 11 miles of the atmosphere and
these can be concentrated in places like tree line streets
Four major categories of air pollutants - ANSWER-The oxides
Volatile organic compounds
Suspended particulate matter
Radioactive substance is
The oxides - ANSWER-Can be made of carbon sulfur and nitrogen which most come
from burning fossil fuels or the use of cars and industry like power plants
volatile organic compounds - ANSWER-Hundreds of volatile compounds evaporate and
enter the air is vapor these include gasoline, paint solvents, cleaning solutions
This is how photochemical smog is made
Suspended particulate matter - ANSWER-Thousands of different types of solid particles
like soot, dust, pollen, and asbestos, lead, and liquid droplets of chemicals like
hydrogen2, oil and pesticides
radioactive substances - ANSWER-Can be gaseous or particulate and a example would
be radon
Input controls - ANSWER-These controls prevent the pollution from being generated in
the first place they are most desirable ecologically and often economically
These may take the form of laws, taxes, economic incentives, and process redesign
