Fact 1: Hurricanes convert heat energy into mechanical energy.

Fact 2: Hurricanes A hurricane is a type of tropical cyclone.

Given the two facts above, answer the question "What converts heat energy into mechanical energy?" with the following options: 
- animal transport
 - kinetic energy
 - all animals
 - dangerous
 - an engine
 - objects that have mass
 - tropical cyclones
 - electricity


 

       tropical cyclones  