australia is in the continent of australia it is both a continent and a country note contrary to erroneous opinion it is not in the continent of either aus tralasia or oceania neither of these is a geographical continent but rather they are both political regionst is sometimes referred to as an island continent because it is one of only two continents in the world completely surrounded by water australia is part of the geographic region of oceania which by definition is not actually a continent
So, the colder the water, the more dense it is. Increasing salinity also increases the density of sea water. Less dense water floats on top of more dense water. Given two layers of water with the same salinity, the warmer water will float on top of the colder water.
This causes the molecules to spread apart, which means that there are fewer molecules are in a given volume and the substance's density decreases. As temperature decreases, the molecules move more slowly, so they collide less and take up less space and the substance's density increases. Water has a density of 1,000 kilograms per cubic meter at 4 degrees Celsius and a density of 958.4 kilograms per cubic meter at 100 degrees Celsius.