Conductivity can be used to calculate the salinity of the water.
Pure water does not conduct electricity, because there are no free electrons. In salt water, the sodium chloride dissolves to form negatively charged chlorine atoms and positively charged sodium atoms, which WILL conduct electricity. So measuring the conductivity of the water will give you an indication of the amount of salt dissolved.
One reason for measuring conductivity in seawater is to determine the salt content. Absolutely pure water is actually a pretty good insulator with low conductivity. As materials dissolve into it, the conductivity shoots up (water is an excellent solvent it seems). By measuring electrical and thermal conductivity of sea water you can quickly get a good handle on how much salt and other material is dissolved into it.
The long and short of measuring the electrical conductivity of elements involves little more than making a short piece of "wire" out of a given (pure) element and then applying a voltage and measuring the current. Take into account the external resistance, and the length, cross sectional area and temperature of the element and make some calculations. It's a little more involved with liquids, and tougher still with gaseous elements, but a conductor will "conduct" based on its composition, length, cross sectional area and temperature.
Same place that kings keep their armies... Up thier sleevies!
Rulers, beam balance scales, and wrist-watches.
These instruments are called dropsondes.
conduction is basically the flow of electrons from one end to the other in a conductor. lets take the example of a metal rod. the metal rod can conduct electricity as the electrons are able to flow and the resistance offered by the cations is relatively low. however, when the metal rod is heated, the cations start vibrating as energy is supplied to them. vibrating cations cause greater hindrance to the movement of electrons and thus, the conductivity decreases.
Conductivity can be used to calculate the salinity of the water.
Conductivity can be used to calculate the salinity of the water.
oceanographers use submarines to take pictures of sea life and things that have been found or things that they are looking for.
One million years... How long did it take your grammar teacher to get sacked?
Because sand is denser than water. But I suspect you meant to ask "why is it easier to stay afloat in seawater than it is in fresh water". In which case the answer is the same: seawater is denser ... but not as dramatically, and the difference is small enough that you're unlikely to actually notice it unless you take careful measurements.
They take magnesium.
There is no instrument on that list that can take any reliable measurements.
Take Thermometer and put it in the hot water -Calculate Temparature-go with the formula of Conductivity of heat
On average, seawater in the world's oceans has a salinity of about 3.5%. This means that every kilogram, or every litre, of seawater has approximately 35 grams (1.2 oz) of dissolved salts.Accidentally consuming small quantities of clean seawater is not harmful, especially if the seawater is consumed along with a larger quantity of fresh water. However, drinking seawater to maintain hydration is counterproductive; more water must be excreted to eliminate the salt (via urine) than the amount of water that is gained from drinking the seawater itself. The effect of seawater intake has also been studied in laboratory settings in rats.This study confirmed the negative effects of drinking seawater when dehydrated.
conductivity
seismograph
Wind speed