APES Unit 7 Review
Acid deposition refers to precipitation with a ph of less than ________. - ANS 5.6
\Beginning in _____ (what year), all new cars and trucks were required to have a catalytic
converter. Where is the catalytic converter located on a vehicle? - ANS 1975 - between
the engine and the muffler, They are full of rare and expensive metals which are
necessary for conducting the reactions that clean the exhaust.
\Besides preventing air pollution, how are vapor recovery nozzles helpful for the
environment (think conservation)? - ANS The gas is saved, rather than evaporated,
leading to less waste.
\Briefly explain how electrostatic precipitators clean pollutants from the air. - ANS Dirty
air is passed though an area with high negative charge, which passes that negative
charge to the
particles (pollution) in the air. The dirty air is then passed between positively charged
plates, which attract
the negatively charged particles. The particles stick to the plates, allowing clean air to
exit the filter.
\Choose two animals that communicate by sound. Describe their sound communication,
and the impact of having those sounds masked or disterbed by noise pollution. - ANS
Bats communicate using high frequencies. If they couldn't hear, they would have a hard
time communicating with each other and even finding their way around.
Dolphins also use sound to communicate with each other. Similar results would happen
if their hearing was damaged.
\Circle the components necessary in order to make long-lasting photochemical smog. -
ANS Nitrogen oxides, VOCs, sunlight, oxygen
\conditions that leads to a higher incidence of photochemical smog: - ANS dry, warm,
sunny climate, city in a valley, urban areas, low wind, many tall buildings, high
populations
\consequences of acid rain - ANS - dissolves marble and limestone which can eat away
buildings and statues
- leaches nutrients from soils
- elevates aluminum in soil hindering water and nutrient uptake by plants
- crop damage
- lakes becomes more acidic which hurts the organisms in lake
- forests have decreased ability to withstand cold weather
- affects communities downwind from coal power plants
- some ecosystems have more limestone in bedrock which neutralizes effect of acid rain
on lakes and ponds
\Cool air is (more / less) dense than warm air. Explain how this fact contributes to the
trapping of smog during thermal inversion. - ANS More - Normally, warm air near the
ground will rise,
bringing pollutants up away with it. During
Acid deposition refers to precipitation with a ph of less than ________. - ANS 5.6
\Beginning in _____ (what year), all new cars and trucks were required to have a catalytic
converter. Where is the catalytic converter located on a vehicle? - ANS 1975 - between
the engine and the muffler, They are full of rare and expensive metals which are
necessary for conducting the reactions that clean the exhaust.
\Besides preventing air pollution, how are vapor recovery nozzles helpful for the
environment (think conservation)? - ANS The gas is saved, rather than evaporated,
leading to less waste.
\Briefly explain how electrostatic precipitators clean pollutants from the air. - ANS Dirty
air is passed though an area with high negative charge, which passes that negative
charge to the
particles (pollution) in the air. The dirty air is then passed between positively charged
plates, which attract
the negatively charged particles. The particles stick to the plates, allowing clean air to
exit the filter.
\Choose two animals that communicate by sound. Describe their sound communication,
and the impact of having those sounds masked or disterbed by noise pollution. - ANS
Bats communicate using high frequencies. If they couldn't hear, they would have a hard
time communicating with each other and even finding their way around.
Dolphins also use sound to communicate with each other. Similar results would happen
if their hearing was damaged.
\Circle the components necessary in order to make long-lasting photochemical smog. -
ANS Nitrogen oxides, VOCs, sunlight, oxygen
\conditions that leads to a higher incidence of photochemical smog: - ANS dry, warm,
sunny climate, city in a valley, urban areas, low wind, many tall buildings, high
populations
\consequences of acid rain - ANS - dissolves marble and limestone which can eat away
buildings and statues
- leaches nutrients from soils
- elevates aluminum in soil hindering water and nutrient uptake by plants
- crop damage
- lakes becomes more acidic which hurts the organisms in lake
- forests have decreased ability to withstand cold weather
- affects communities downwind from coal power plants
- some ecosystems have more limestone in bedrock which neutralizes effect of acid rain
on lakes and ponds
\Cool air is (more / less) dense than warm air. Explain how this fact contributes to the
trapping of smog during thermal inversion. - ANS More - Normally, warm air near the
ground will rise,
bringing pollutants up away with it. During
