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No one drowns in the Dead Sea A Science ACE ProjectBy: Eric Seow(8) 1P1

Contents Facts about the Dead Sea Why it is so special Why we can float so easily on the Dead Sea What exactly is density? The Dead Sea today Will the Dead Sea survive?

Where is the Dead Sea?

At a glance Maximum length: 67km Maximum width: 18km Surface area: 810km2 Average depth: 118m Water volume: 147km3 Surface elevation: - 422m

The Dead Sea is sinking In this part of the world, there is ariftforming where two crustal plates are spreading apart The East Rift Valley runs through most of Africa, but it starts north of the Dead Sea and runs south along the eastern side of the continent The Dead Sea is located right along the Rift Valley where the earth's crust is being stretched thin

The Dead Sea is sinking Where the earth's crust gets thin that part of the surface sinks downward The Dead Sea is still sinking lower, even today. Scientists figure that the Dead Sea lowers by as much as 0.3 metre per year

Other Strange Facts 'Dead Sea' is a translation from the Hebrew name 'Yam ha Maved' which means 'Killer Sea' It has some of the most saline water on earth; as much as 35% is dissolved salts! The Dead Sea is completely landlocked and it gets saltier with increasing depth

The water in the Dead Sea is deadly to most living things. There are, however, several types of bacteria and one type of algae. Fish accidentally swimming into the waters from freshwater streams that feed the Sea are killed instantly Other Strange Facts

The shores of the Sea are covered with white crystals of salt These are mineral salts, just like you find in the oceans of the world, only in extreme concentrations Other Strange Facts

Why we can float on Dead SeaWe are stronger than fishes, so the Dead Sea poses no danger to us. We can swim in it. But these people are actually floating in the Sea. How did they do it?

The Dead Sea is continually fed water from the rivers but no rivers drain out of the Dead Sea The only way water gets out of the Sea is through evaporation. This part of the world get plenty hot. When the water evaporates, it leaves behind all the dissolved minerals in the Sea, just making it saltierThe Dead Sea is very dense

The Dead Sea is very dense The density of the Dead Sea is very high because of high concentration of dissolved mineral salts What this means is our bodies are morebuoyantin the Dead Sea - so you bob like a cork In fact, people are so buoyant in this water, it makes it difficult to swim

Density =

What Exactly Is Density?Density of a substance is defined as its mass per unit volumeThe SI unit for density is kilogram per cubic metre (kg/m3)

What Exactly Is Density?An object floats whenThe density of the object is less than that of the fluid

16Determining DensityMeasure the mass of the empty density bottle together with its stopper by using an electronic balanceFill the bottle with the given liquid. Then close the mouth of the bottle with the stopper and carefully wipe dry the outside of the bottleMeasure the mass of the density bottle again

17Determining DensityCalculate the mass of the liquid by subtracting the mass of density bottle from the total mass of density bottle with liquid.Calculate the density of the liquid by dividing the mass by its volume. The volume of liquid equals to the volume of density bottle.

18The Dead Sea today Many tourists flock to the Black Sea to experience the feeling of floating on water

Will the Dead Sea survive?res. The Dead Sea is shrinking, and as it recedes, the fresh water aquifers along the perimeter of the Sea are receding along with it As this fresh water diffuses into salt deposits beneath the surface, the water slowly dissolves the deposits until the earth above collapses More than 1,000 sinkholes have appeared in the past 15 years, swallowing a portion of road, date-palm fields and several buildings Environmental experts believe that hotels along the shore are also in danger

Referenceshttp://www.extremescience.com/zoom/index.php/earth-records/37-dead-seahttp://www.deadsea.co.il/http://www.smithsonianmag.com/science-nature/deadsea.html#ixzz0kmrMDRhKMrs Chus IVLE Lecture Notes On Density And Mass

Thank You!