Gases in the Atmosphere and Air Pollution
Which layer has the most oxygen?
Troposphere
What is air pressure?
the weight of the atmosphere pressing down on the earth
What layer has life can sustain life?
Troposphere
What is air quality?
the degree to which the air is polluted
What is smog?
Air pollution that hangs over cities and reduces visibility.
Rain and snow are both types of ________.
Precipitation
The molecules in gas are (more/less) dense than the molecules in liquid.
Less
When altitude increases, what does temperature do?
decreases
What are the main layers of the atmosphere in order from Earth to space
Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere
Exposure to polluted air in childhood contributes to which disease?
Asthma
What is noise pollution?
The type of pollution that occurs when you guys yell all the time (unwanted sounds).
Water gets back to the ocean via this process.
Run-off
Why is the Ozone Layer important?
It blocks the UV rays that give us skin cancer
At low altitudes, air pressure is ________.
High
What layer contains the ozone layer?
Stratosphere
An excess of this gas contributes to global warming.
Carbon Dioxide
What are common sources of air pollution?
- Mobile Sources (cars, trucks, buses, planes, trains)
- Stationary Sources (power plants, oil refineries, industrial facilities, and factories)
- Area Sources (agricultural areas, cities, and wood burning fireplaces)
-Natural Sources (wind-blown dust, wildfires, and volcanoes)
Dew is formed by this process.
Condensation
What is the most prevalent gas in the Troposphere?
Nitrogen
There are (more/fewer) molecules of gas at higher altitudes.
fewer
What does the mesosphere layer protect us from?
Meteors
This continent has some of the highest levels of air pollution.
Asia
What are organic chemicals that vaporize readily and form toxic fumes called?
Volatile organic compounds
These two steps of the water cycle involve water changing from liquid to gas.
Evaporation and Transpiration
What gases are in the Troposphere?
Nitrogen, Oxygen, Water Vapor, Carbon Dioxide, Ozone
What instrument is used to measure air pressure?
a barometer
Which layer of the atmosphere is the hottest?
Thermosphere
What is the Greenhouse Effect?
Pollutants such as water vapor and carbon dioxide trap heat from the sun in the Earth’s lower atmosphere causing the temperature of the Earth to rise.
What type of precipitation has a lower pH level than normal precipitation?
Acid rain
How do humans effect the water cycle?
Climate change, acid rain, pollution, water storage