Saturday, July 11, 2009

Module 3, Fort Worth



1. Provide a brief description of why the following features appear as they do in
this thermal infrared image:

Roads- Light shade; the surface is emitting energy absorbed during day time.

Natural and man-made vegetation- Dark shade; absorbing energy and using it rather than emitting it later.

Sidewalks and patios- Light shade; reflecting energy. Concrete will reflect even small amounts of thermal energy.

Storage sheds in back yards- Dark shade, probably the same material as the house roof shingles, which reflect during the day and cool rapidly at night.

Automobiles- Mostly dark, unless recently driven, which generates heat.

Bright spots on many of the roof tops- Light shade; vent locations from the plumbing and dryers. They are emitting heat.

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