How does the mass of a dinosaur compare to the mass of 1 liter of water?

Answer 1

It is easiest to observe the volumes of the two and go from there. One liter of water is most easily observed by most students as exactly half of a two liter of soda. Water and soda have a similar density (mass divided by volume) so they will have a similar mass. Then compare the volume of 1 liter to the volume of a dinosaur. I believe even most baby dinosaurs were larger than a liter. Take into account that most land animals alive will have a density not too far from water (some people float and some sink). The animals that have a density that differs greatly from water will more often than not have a higher density than water and sink. So, because a dinosaur is SIGNIFICANTLY more voluminous than a liter, and we can speculate that they were at least the density of water if not more, its very safe to say that dinosaurs had many times the mass of 1 liter of water.