"Because of salinity and temperature variations, the density of seawater ranges from about 1.02 g/cm3 to 1.03 g/cm3." ~ Glencoe Earth Science. Ohio: McGraw Hill, 2002: 395.
The ability of an object to float or sink in a liquid depends on its density. Less dense substances float in denser liquids and denser substances sink in less dense liquids.
You are the captain of the new submarine "Elizabeth X", and a young sailor on board with you has never learnt physics. He is intrigued to realize that a submarine made of heavy metal such as iron, holding so many heavy objects and people can float and sink at will in water.
Help the young sailor understand why an iron submarine can float and sink in water.
In your answer, you should illustrate and explain the concepts of density, mass and volume as the young sailor has never learnt physics before.
The submarine is currently submerged. What will happen to the submarine (will it float or sink deeper) if the temperature at sea drops to -25 degrees Celsius?
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~ Jefferson Lab, http://education.jlab.org/faq/index.html
"Because of salinity and temperature variations, the density of seawater ranges from about 1.02 g/cm3 to 1.03 g/cm3."
~ Glencoe Earth Science. Ohio: McGraw Hill, 2002: 395.
The ability of an object to float or sink in a liquid depends on its density. Less dense substances float in denser liquids and denser substances sink in less dense liquids.
You are the captain of the new submarine "Elizabeth X", and a young sailor on board with you has never learnt physics. He is intrigued to realize that a submarine made of heavy metal such as iron, holding so many heavy objects and people can float and sink at will in water.
Help the young sailor understand why an iron submarine can float and sink in water.
In your answer, you should illustrate and explain the concepts of density, mass and volume as the young sailor has never learnt physics before.
The submarine is currently submerged. What will happen to the submarine (will it float or sink deeper) if the temperature at sea drops to -25 degrees Celsius?