The speaking module. II. Speaking Exercises:

II. Speaking exercises:

Exercise 1. Learn the definitions: Internal combustion engine; fuel; fossil fuel; thermodynamics; heat engine; diesel engine.

Internal combustion engine -an engine of one or more working cylinders in which the process of combustion takes place within the cylinders.  

Fuel - material such as coal, gas, or oil that is burned to produce heat or power.  

Fossil fuels -a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.

Thermodynamics-the branch of physical science concerned with the interrelationship and interconversion of different forms of energy and the behavior of macroscopic systems in terms of certain basic quantities, such as pressure, temperature, etc.  

Heat engine -an engine that converts heat energy into mechanical energy.    

Diesel engine - an internal-combustion engine that burns heavy oil.  

Exercise 2. Ask questions to the given answers:

2) Question: ___________________________________________?

Answer: Energy is added to the gas stream in the combustor, where fuel is mixed with air and ignited.

Question: __________________________________________?

Answer: The products of the combustion are forced into the turbine section.

Question: ___________________________________________?

Answer: Heat engines are often confused with the cycles they attempt to mimic.

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