Thursday, November 20, 2008

Voyage 3 Havana to London

Time-9days
Direction-North East
Latitude-25North-55North
Attempts-2
Helpful winds-Prevailing westerlies
Hurtful winds-Horse latitudes

Voyage 2 Lima to Cape Town

direction- South then East
time- 15 days
attempts-2
helpful wind-prevailing westerlies at first
hurtful winds-prevailing westerlies then
Latitude-25North-55North

Voyage 1- San Francisco to Sydney

Latitude- 40North- 72South
Time-12days
Helpful winds- Trade winds
Hurtful winds-Trade winds
Direction- South West
Attempts-1

Tuesday, November 4, 2008

Acid Rain


Acid rain is rain or any other form of perticipation that is unusually acidic. It has harmful effects on plants, aquatic animals, and infastructure. Acid rain is mostly caused by human emissions of sulfur and nitrogen compounds which react in the atmosphere to produce acids. The issues are burning of coal ,pollution,rain, sleet, snow, fog, and dry particles carrying nitrogen oxide and sulfur oxide. There are lots of consequences like damaged buildings , statues damanged lakes and ponds-plants, amphibians, fish and insects dyin. The solutions for all those problems may be burning less coal use low-sulfur coal and use scrubbers(remove most sulfur oxides in air).