[NCC-1701]

►►►What weighs more...a pound of water, a pound of feathers, or a pound of rocks◄◄◄

The weight of one pound of rocks would vary with the type of rock (sandstone vs granite). However one gallon of water weighs 8.34 lbs. One gallon of gasoline weighs 6.152 lbs. One gallon of milk weighs 8.5 lbs.

[bruinbirdman]

"The weight of one pound of rocks would vary with the type of rock (sandstone vs granite)."

Indeed, absent the qualifier, there is a difference "if" one is refering to "fluid ounce" which is a measure of volume.

A few decades ago, especially in the food industry, the distinction was not made and the industry mixed their measurement to suit price conveniences. A can of size 15 1/2 fluid ounces, say of Pringles potatoe chips, would be compared to 16 dry ounces of Lays potatoe chips in a bag in cents/ounce.

yitbos

[SunkenCiv]

The weight of one pound of rocks would vary with the type of rock (sandstone vs granite).

That's difficult to prove.