Thermodynamics I

What is the definition of thermodynamics?

• a.The energy available to do work.
• b.The study of the relationship between heat, work, and energy.
• c.The amount of heat it takes to move an engine.
• d.The movement of heat.

What was the name of the prevailing theory of heat prior to thermodynamics?

• a.Heat Equals Work Theory
• b.Kinetic Theory
• c.Caloric Theory
• d.Heat Power Theory

Which of the following provides evidence against the caloric theory of heat?

• a.Heat does not flow from hot objects to cold objects as predicted by caloric theory.
• b.Adding more heat to ice water does not raise the temperature as predicted by caloric theory.
• c.Steam engines do not run efficiently when they are cold.
• d.In a steam engine, heat flows from the hot parts of the engine to the cool parts.

What breakthrough is said to mark the true beginning of the field of thermodynamics?

• a.The discovery of a substance called “caloric.”
• b.The invention of the thermometer.
• c.The discovery of latent heat.
• d.The invention of the electric motor.

What is latent heat?

• a.Heat that doesn’t move from high temperature to low temperature, also known as “lazy heat.”
• b.The heat required to move an object from its “latent” position.
• c.The heat required to convert the state of matter of a substance without changing its temperature.
• d.Heat that does not move unless acted upon by an outside source.

Which statement is true about the First Law of Thermodynamics?

• a.It states that energy cannot be created.
• b.It states that energy cannot be destroyed.
• c.It is another name for the Law of Conservation of Energy.
• d.All choices are correct.

Why was the invention of the calorimeter important?

• a.It was the first device invented to measure temperature.
• b.It allowed scientists to measure changes in temperature inside of a container without outside influences.
• c.It proved that the substance known as” caloric” existed.
• d.It provided a reverse process in which cold objects could warm up hotter objects.

Which is a true statement about energy conversion?

• a.One form of energy cannot be converted into another form of energy.
• b.Heat can be converted other forms of energy only if caloric is present.
• c.There is no relationship between heat and work.
• d.Heat can be converted into other forms of energy.

Which is true according to Rudolf Clausius’s 1850 treatise on work and heat?

• a.The more work that is done, the less heat is used up.
• b.The more work that is done, the more heat is consumed.
• c.Heat and work are not related to each other.
• d.Heat and work are related only when caloric is present.