Two global warming scare articles with opposite warnings - you can't make this stuff up!

[mrsat_98]

Does it really matter what system is used to weigh the water? A mass of water weighs the same whether it's frozen or not.

A gallon refers to the volume ( size of the container ) and has nothing to do with weight. However a gallon of water will always weigh the same at the same temp and. IF you take a gallon of water and freeze it, it will expand meaning you have more than a gallon of ice.

Unless you use common core math.

The US liquid gallon[edit]
The US gallon, which is equal to approximately 3.785 L, is legally defined as 231 cubic inches.[1][2] A US liquid gallon of water weighs about 8.34 pounds or 3.78 kilograms at 62 °F (17 °C), making it about 16.6% lighter than the imperial gallon. There are four quarts in a gallon, two pints in a quart and 16 US fluid ounces in a US pint, which makes a US gallon equal to 128 fl. oz. In order to overcome the effects of expansion and contraction with temperature when using a gallon to specify a quantity of material for purposes of trade, it is common to define the temperature at which the material will occupy the specified volume. For example, the volume of petroleum products[3] and alcoholic beverages[4] are both referenced to 60 °F (16 °C) in government regulations.

 

[Dr.3D]

A gallon refers to the volume ( size of the container ) and has nothing to do with weight. However a gallon of water will always weigh the same at the same temp and. IF you take a gallon of water and freeze it, it will expand meaning you have more than a gallon of ice.

Unless you use common core math.

The US liquid gallon[edit]
The US gallon, which is equal to approximately 3.785 L, is legally defined as 231 cubic inches.[1][2] A US liquid gallon of water weighs about 8.34 pounds or 3.78 kilograms at 62 °F (17 °C), making it about 16.6% lighter than the imperial gallon. There are four quarts in a gallon, two pints in a quart and 16 US fluid ounces in a US pint, which makes a US gallon equal to 128 fl. oz. In order to overcome the effects of expansion and contraction with temperature when using a gallon to specify a quantity of material for purposes of trade, it is common to define the temperature at which the material will occupy the specified volume. For example, the volume of petroleum products[3] and alcoholic beverages[4] are both referenced to 60 °F (16 °C) in government regulations.

But you see, my reference was in pounds, not gallons. I had just converted his gallon to pounds to illustrate what he was trying to say. If you take a gallon of water and freeze it, it still weighs the same as it did when it was liquid. Yes it would change volume, but it would still be the same mass of water as before it was frozen.