Short term health insurance generally include the following:

Simplified applications - more limited health history questionnaires than permanent coverage
Faster Turn-around  -  effective dates can be as early as midnight following post or fax date if
   approved
Pre-existing conditions  -  most short term plans do not cover pre-existing conditions.  They
   are really built to handle more catastrophic issues.
Preventative care is typically not covered on Short Term policies
Choice of deductible typically runs from $500 to $2000
Usually a minimum of 30 days is required and can be up to 6 months (sometimes month to
   month up to 12 months)
Short term plans are typically pre-payed for a fixed period of time

You can get an instant quote and benefit information