Thermodynamics

56 Questions | By Shuling | Updated: Mar 22, 2022 | Attempts: 4321

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Questions on heat and thermodynamics for Principles of Engineering

Questions and Answers

1.

Which of the below is not a type of heat transfer?
- A.
  
  Conduction
- B.
  
  Radiation
- C.
  
  Expansion
- D.
  
  Convection
2.

All matter is composed of particles that are in constant, random motion. Because of this motion, the particles have ? energy.
3.

The quantity that tells how hot or cold something is compared to a standard is ? and it is related to the average kinetic energy of a substance.
4.

The temperature scale that assigns 0 degrees to the freezing point of water and 100 degrees to the boiling point of water is the ? scale.
5.

The SI scale of temperature used in scientific research is the ? scale.
6.

If two objects are at the same temperature, the particles in both substances have the same ? kinetic energy.
7.

Nearly all forms of matter ? when heated due to the fact that the particles will move faster and tend to move farther apart, on the average.
8.

Which of the following is NOT a unit of heat?
- A.
  
  Fahrenheit
- B.
  
  Joule
- C.
  
  Calorie
- D.
  
  British thermal unit
9.

Besides kinetic energy, molecules have rotational kinetic energy, potential energy due to forces between molecules and more. The total of all energies inside a substance is called ? energy.
10.

When heat flows from one object or substance to another it is in contact with, the substances are said to be in ? contact.
11.

When objects are in thermal contact, heat will flow until they are at the same temperature, a condition known as ? ?
12.

A thermometer comes to thermal equilibrium with whatever it is place in, therefore a thermometer actually registers its own temperature.
- A.
  
  True
- B.
  
  False
13.

On the Fahrenheit scale, water freezes at ? degrees.
- A.
  
  0
- B.
  
  32
- C.
  
  36
- D.
  
  38
14.

On the Fahrenheit scale, water boils at ? degrees.
- A.
  
  212
- B.
  
  100
- C.
  
  180
- D.
  
  220
15.

Two strips of different metals, permanently bonded together, will curve when heated due to the different ? rates of the metals.
16.

The term for two metals bonded together that curve when heated is a ? strip.
17.

A device in the home that uses a bimetallic strip to turn on or to turn off the furnace is called a ?
18.

Which has more internal energy, a bathtub full of cool water or a cup of hot water?
- A.
  
  Bathtub full of cool water
- B.
  
  Cup of hot water
19.

If a piece of aluminum is placed in contact with both a bathtub full of cool water and a cup of hot water, which way will heat flow?
- A.
  
  From the cup to the bathtub
- B.
  
  From the bathtub to the cup
20.

If heat flows from a cup of hot water to a bathtub full of cool water, the water in the cup will have a loss in ? energy while the water in the tub will have an increase in ? energy.Write just one answer, it is the same for both question marks.
- A.
  
  Thermal
- B.
  
  Heat
- C.
  
  Internal
21.

If heat flows from a cup of hot water to a bathtub full of cool water, the temperature gain of the water in the tub will be ? the temperature change of the water in the cup.
- A.
  
  The same as (but opposite sign)
- B.
  
  Greater than (but opposite sign) than
- C.
  
  Smaller than (but opposite sign) than
22.

The transfer of heat between materials that are in direct contact is called ?
23.

Conduction takes place very easily in metals primarily because metals have very "loose" outer ? in their atoms that can drift through the metal and jostle other particles.
24.

A very poor conductor such as wood or styrofoam is known as an ? because they delay the transfer of heat.
25.

Air is a good conductor.
- A.
  
  True
- B.
  
  False