Flashcards
Environmental Problems
Cards in this deck (18)
- 1POWER STATIONS-BURN HUGE AMOUNTS OF FOSSIL FUELS TO MAKE ELECTRICITY
- 2CARSTHESE ALSO BURN A LOT OF FOSSIL FUELS
- 3FUELS LIKE CRUDE OIL AND COALCONTAIN CARBON AND HYDROGEN.
DURING COMBUSTION THE CARBON AND HYDROGEN ARE OXIDISED SO THAT CARBON DIOXIDE AND WATER VAPOUR ARE RELEASED INTO THE ATMOSPHERE. HEAT IS ALSO PRODUCED - 4COMBUSTIONHYDROCARBON + OXYGEN = CARBON DIOXIDE + WATER VAPOUR
- 5SULFURIF THE FUEL CONTAINS SULFUR IMPURITIES, THE SULFUR WILL BE RELEASED AS SULFUR DIOXIDE WHEN IT IS BURNT
- 6OXIDES OF NITROGENTHESE WILL BE FORMED IF THE FUEL IS BURNT AT HIGH TEMPERATURE
- 7COMPLETE COMBUSTIONWHEN THERE'S PLENTY OF OXYGEN, ALL THE FUEL BURNS
- 8PARTIAL COMBUSTIONIF THERE'S NOT ENOUGH OXYGEN, SOME OF THE FUEL DOESN'T BURN.
- 9PROBLEMS OF PARTIAL COMBUSTIONSOLID PARTICLES (PARTICULATES) OF SOOT (CARBON) AND UNBURNT FUEL ARE RELEASED.
CARBON MONOXIDE (A POISONOUS GAS) IS ALSO RELEASED - 10ACID RAINCAUSED BY SULFUR DIOXIDE
- 11HOW IS ACID RAIN FORMED?SULFUR DIOXIDE MIXES WITH CLOUDS TO FORM DILUTE SULFURIC ACID. THIS FALLS AS ACID RAIN
- 12OTHER CAUSES OF ACID RAINOXIDES OF NITROGEN (YES, THEM AGAIN!) CAUSE ACID RAIN BY FORMING DILUTE NITRIC ACID IN CLOUDS
- 13PROBLEMS OF ACID RAINCAUSES LAKES TO BECOME ACIDIC, KILLING MANY PLANTS AND ANIMALS.
KILLS TREES AND DAMAGES LIMESTONE BUILDINGS AND STONE STATUES
MAY IMPACT ON HUMAN HEALTH - 14ENVIRONMENTAL IMPACT OF ELECTRICITYMUST BE BALANCED AGAINST BENEFITS.
GOVERNMENTS RECOGNISE THIS AND HAVE DRAWN UP INTERNATIONAL AGREEMENTS
TO REDUCE EMISSIONS OF AIR POLLUTANTS - 15HOW CAN WE REDUCE ACID RAIN?BY REDUCING SULFUR EMISSIONS, OF COURSE!
- 16REDUCING ACID RAIN-THE FACTSMOST SULFUR CAN BE REMOVED FROM FUELS BEFORE BURNING BUT IT COSTS MORE MONEY.
IT ALSO TAKES MORE ENERGY, WHICH COMES FROM BURNING MORE FUEL WHICH RELEASES THE GREENHOUSE GAS CARBON DIOXIDE! - 17REDUCING ACID RAIN-THE FACTS (PART 2)PETROL AND DIESEL ARE NOW BEING REPLACED BY LOW SULFUR VERSIONS
POWER STATIONS HAVE ACID GAS SCRUBBERS TO TAKE HARMFUL GASES OUT BEFORE THEY ARE RELEASED
WE COULD ALWAYS USE LESS FOSSIL FUELS! - 18WHAT CAN YOU DO?SULFUR DIOXIDE CAN BE CARRIED A LONG WAY IN THE ATMOSPHERE, CAUSING PROBLEMS IN ANOTHER COUNTRY.
SO, TRY PUTTING ON AN EXTRA JUMPER INSTEAD OF TURNING UP THE HEATING AND WALK TO COLLEGE INSTEAD OF GETTING A LIFT BY CAR!
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- Flashcards on Environmental Problems for GCSE Science Core AQA A
- Created by
- Alan Stone
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