Gases
What is the origin of the word "smog"
smoke and fog
Name one effect of Acid Rain.
Plant damage, chemical weathering, lake acidification
What is the coldest layer of the atmosphere?
Thermosphere
This is the main type of gas released by volcanoes.
What is Sulfur Dioxide (SO2)
How does the temperature change in each layer of the atmosphere.
What is down, up, down, up.
In what layer of the atmosphere is smog found?
troposphere
When acid rain falls into a lake, how would the pH change?
It would decrease.
What is the approximate pH range of natural water sources?
6.5-8.5
This is the layer of the atmosphere where weather occurs.
What is Troposphere - all weather occurs here
List three health effects of smog.
Respiratory effects (there are many), lung cancer, heart disease, compromised immune system
Do all lakes have the same pH? Explain.
No, they might have different substrates on the bottom. For example limestone/carbonate or sand
Why does the sulfur dioxide (SO2) released by volcanoes initially cause global cooling?
SO2 reflects solar radiation away from Earth.
When volcanic emissions mix with gases in the stratosphere, this is created:
Vog
How would life on Earth be different if the Mesosphere was missing.
There would be a lot more asteroid impacts on our planet.
What produces nitrogen oxides (NO2)?
What produces volatile organic compounds (VOCs)?
NO2 - vehicles, coal plants, factories
VOCs - gasoline, manmade chemicals, some trees
Based on our experiment so far, what substrate seems to be a better buffer?
Limestone / Calcium Carbonate
Identify the following as point or non-point:
Farms, volcano, oil spill, cars
Point: Volcano, oil spill
Non-point: Farms, cars
How are greenhouse gases a good thing for our planet?
They trap heat in our planet and without them the Earth would be frozen and there would be no life.
List one object you would find in each of the layers of the atmosphere.
Trophosphere - weather, commercial airplanes
Stratosphere - ozone, military jet
Mesosphere - Meteors
Exosphere - satellite
Photochemical smog is a secondary pollutant. What three things react in the atmosphere to cause it?
Sunlight, NO2, VOCs
What is a buffer?
A buffer is material that helps to reduce changes in pH.
Why does temperature rise in the stratosphere?
The ozone layer absorbs solar rays, which protects the Earth from radiation, As the rays are absorbed, the stratosphere heats.