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Physics test 2
| Question | Answer |
|---|---|
| The moderate temperatures of islands throughout the world has mainly to do with water's | High specific heat capacity |
| Whether one object is warmer than another object has most to do with | . Molecular kinetic energy |
| The temperature of boiling water is | Both |
| When you touch a piece of ice with your finger, energy flows: | From finger to ice |
| Absolute zero corresponds to a temperature of | Both -276C & 0 K |
| Heat is simply another word for | Thermal energy that flows from hot to cold |
| Increasing the temperature of 50 grams of water by 1°C requires: | 50 calories |
| A substance that heats up relatively quickly has a | Low specific heat capacity |
| The change in the thermal energy of a system plus the product of its pressure and volume | Enthaply |
| The motion of molecules that most affects temperature is: | Translational motion |
| Thermal energy is normally measured in of | Calories & Joules |
| Which two laws of thermodynamics are statements of what doesn't happen? | The second and the third |
| A bimetallic strip used in thermostats relies on the fact that different metals have different: | Rates of thermal expansion |
| Water at 4 degrees Celsius will expand when it is slightly: | Cooled and warmed |
| Which is larger: a Celsius degree or a kelvin? | Neither |
| What are the temperatures for freezing water on the Celsius and the Fahrenheit scales, respectively? | 32 degrees Fahrenheit and 0 degrees Celsius |
| What are the temperatures for freezing water and boiling water on the Kelvin temperature scale? | the freezing point of water in Kelvin is 273 K and the boiling point is 373 K |
| In which direction does thermal energy flow between hot and cold objects? | From hot to cold |
| What role does temperature have in the direction of thermal energy flow? | Temperature differences specify the direction of heat flow from hot to cold |
| How many joules are needed to change the temperature of 1 gram of water by 1 °C? | 4.19 J |
| Which law of thermodynamics consist of the conservation of energy applied to thermal systems? | First law |
| Which law of thermodynamics is related to the direction of heat transfer? | Second |
| When can thermal energy in a system move from lower to higher temperatures? | When a system gains heat energy |
| When disorder in a system increases, does entropy increase or decrease? | Entropy increases |
| Under what condition can the entropy of a system be decreased? | The entropy of a system decreases only when it interacts with some other system whose entropy increases in the process |
| Which generally expands more for an equal increase in temperature: solids or liquids? | Liquids expands more than solids |
Created by:
yanise2006