Homework

__Page 461 #20__ 20.a) Albedo from a typical city would be more efficent becasue the city would have more materials to make it better then the forest. Thats why albedo from a forested area would be useful just not as effiecent as city albedo.

b) I think white rock be a the best ground cover for a city plaza beacsue it white and does not absorb heat as much as asphalt or concrete.

c) White color like from a white rock reflects heat making it cooler, when a dark color like asphalt absorbs heat making it hotter.

d) I think tar would take the longest to cool down at night becasue it is a dark colour and dark colours absorb heat, where as light colours reflect heat.

e) Tar is a very dark colour, dark colours absorb heat which means the tar would take a long time to cool down. Pale chingles would not abosrb as much heat becasue light colours reflect heat, meaning it would take less time to cool time beacsue there is less heat.

f) Role of conduction in creating an urban heat island would be....

g) Role of convection in cerating an urban heat island would be....