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1 | |
The two temperature scales with the same interval step size are the |
| | A) | Celsius and Fahrenheit. |
| | B) | Fahrenheit and Kelvin. |
| | C) | Kelvin and Celsius. |
| | D) | This does not exist. |
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2 | |
Substance A has a higher specific heat than substance B. With all other factors equal, which requires the most energy to heat equal masses of A and B to the same temperature? |
| | A) | Substance A |
| | B) | Substance B |
| | C) | Both require the same amount of heat. |
| | D) | Answer depends on the density of each substance. |
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3 | |
With all other factors equal, the most likely to burn your mouth when taken directly from an oven is a food with |
| | A) | higher specific heat. |
| | B) | lower specific heat. |
| | C) | specific heat is not important in this situation. |
| | D) | more information needed. |
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4 | |
A large and a small container of water with the same temperature have |
| | A) | the same total amounts of internal energy. |
| | B) | the same amounts of internal and external energy. |
| | C) | different amounts of heat. |
| | D) | the same amounts of all forms of energy. |
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5 | |
Anytime a temperature difference occurs, you can expect |
| | A) | cold to move to where it is warmer. |
| | B) | energy movement from higher temperature regions. |
| | C) | no energy movement unless it is warm enough, at least above the freezing temperature. |
| | D) | energy movement flowing slowly from cold to warmer regions. |
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6 | |
As you go to higher elevations above sea level the boiling point of water |
| | A) | decreases. |
| | B) | increases. |
| | C) | stays the same. |
| | D) | changes with the initial temperature of the water. |
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7 | |
Increasing the rate of heating under a pot of boiling water will |
| | A) | increase the temperature of the boiling water. |
| | B) | increase the rate of boiling, but not the temperature. |
| | C) | increase both the rate of boiling and the temperature of the boiling water. |
| | D) | all of the above. |
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8 | |
As a solid goes through a phase change to a liquid, heat is absorbed and the temperature |
| | A) | increases. |
| | B) | decreases. |
| | C) | remains the same. |
| | D) | fluctuates. |
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9 | |
The transfer of energy from molecule to molecule is called |
| | A) | convection. |
| | B) | radiation. |
| | C) | conduction. |
| | D) | equilibrium. |
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10 | |
No water vapor is added to or removed from a sample of air that is cooling, so the relative humidity of this sample of air will |
| | A) | remain the same. |
| | B) | be lower. |
| | C) | be higher. |
| | D) | depend on the temperature. |
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11 | |
Concerning the Celsius and Fahrenheit thermometer scales, |
| | A) | the Fahrenheit is more accurate since it has more degrees than the Celsius scale. |
| | B) | there is nothing special about either scale. |
| | C) | the Celsius is more precise since it has the same degree interval size as the Kelvin scale. |
| | D) | the Celsius is less precise since degrees below freezing are negative values. |
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12 | |
Numbers on both the Fahrenheit and Celsius scales would have no meaning without |
| | A) | conversion equations. |
| | B) | Kelvin temperature scale. |
| | C) | two fixed points to which they are compared. |
| | D) | none of the above. |
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13 | |
Suppose the volume of gasoline in your gas tank expands with warming temperatures. Do you now have more gasoline? |
| | A) | No, you still have the same mass of gasoline. |
| | B) | Yes, the volume increased and so has the mass. |
| | C) | No, the mass decreased as the volume increased to maintain the density. |
| | D) | Yes, the density and the volume increased. |
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14 | |
Which of the following quantities is one that cannot be used to measure an amount of heat? |
| | A) | Joule. |
| | B) | Calorie. |
| | C) | Btu. |
| | D) | Any of these can be used to measure heat. |
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15 | |
Compared to cooler air, warm air can |
| | A) | hold more water vapor. |
| | B) | less water vapor. |
| | C) | be the same amount of water vapor. |
| | D) | depend on the exact temperature at the time. |
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16 | |
A heat pump is able to produce cooler temperatures because the refrigerant is |
| | A) | a cool liquid that is pumped through the system. |
| | B) | evaporated in the cool part by reduction of pressure. |
| | C) | condensed in the cool part by the action of the compressor. |
| | D) | a working fluid that produces thermal energy from electrical. |
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17 | |
The average human body temperature is 98.6° F. What is the equivalent temperature on the Celsius scale? |
| | A) | 22.8° Celsius |
| | B) | 37° Celsius |
| | C) | 51.2° Celsius |
| | D) | 209.48° Celsius |
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18 | |
A science article refers to a temperature of 300.0 K. What is the equivalent Fahrenheit temperature? |
| | A) | 17° F |
| | B) | 80.6° F |
| | C) | 549° F |
| | D) | 572° F |
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19 | |
The reason a ship floats is because |
| | A) | all hollow objects can float. |
| | B) | the buoyant force is greater then the weight of the ship. |
| | C) | its lack of natural buoyancy is compensated for by the drive of the engines. |
| | D) | the buoyant force is not great enough to drag it under the water. |
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20 | |
The second law of thermodynamics, |
| | A) | is unrelated to the concept of entropy. |
| | B) | implies that there is no upper limit ideally to the efficiency of a heat engine and theoretically all the heat from a source could be transformed into mechanical energy. |
| | C) | is not obeyed by biological systems, only physical systems. |
| | D) | means that the entropy of an isolated system cannot decrease. |
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21 | |
Which of the following substances would you expect to have the highest density at room temperature and atmospheric pressure? |
| | A) | aluminum |
| | B) | gasoline |
| | C) | mercury |
| | D) | iron |
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22 | |
The concept of the arrow of time |
| | A) | is a meaningless concept when it comes to pure physics. |
| | B) | is totally unrelated to the notion of entropy. |
| | C) | is another way of saying that all systems are totally reversible. |
| | D) | suggests that in some cases events can only go in one direction and not all many-particle systems are reversible. |
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23 | |
A 500-kg block has the dimensions 1 m × 2 m × 3 m. Its density is |
| | A) | 12.4 kg/m3. |
| | B) | 83.33 kg/m3. |
| | C) | 56.6 kg/m3. |
| | D) | 343.8 kg/m3. |
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24 | |
A block that is 2 m × 2 m × 2m that weighs 600 kg will exert how much pressure on a horizontal surface? |
| | A) | 1.47 kPa |
| | B) | 1,470Pa |
| | C) | 2,940Pa |
| | D) | 2.9 Pa |
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25 | |
A heat engine absorbs heat at a temperature of 116°C and exhausts heat at a temperature of 85°C. Its maximum efficiency is |
| | A) | 3 percent. |
| | B) | 8 percent. |
| | C) | 16 percent. |
| | D) | 42 percent. |
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