What factors are used to divide the ocean into marine life zones?
Three factors are used to divide the ocean into distinct marine life zones: the availability of sunlight, the distance from shore, and the water depth.
Are organisms that swim freely in the ocean?
Plankton are organisms that swim freely in the ocean.
Which factors determine productivity in temperate oceans?
- Abiotic factors like solar radiation and nutrients, and biotic factors like zooplankton predation may affect ocean primary productivity.
- Productivity varies with the season, and also locally and globally.
Which of the following processes increase ocean salinity?
Evaporation of ocean water and formation of sea ice both increase the salinity of the ocean. However these “salinity raising” factors are continually counterbalanced by processes that decrease salinity such as the continuous input of fresh water from rivers, precipitation of rain and snow, and melting of ice.
What are the causes of ocean salinity?
Salt in the ocean comes from two sources: runoff from the land and openings in the seafloor. Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks.
Does salinity increase with depth?
Notice also that in many ocean regions, temperature and salinity both decrease with depth. At very great depth, salinity increases again because the water near the ocean bottom originates from polar regions where it sinks during the winter; freezing during the process increases its salinity.
Which sea has lowest salinity?
The Arctic Ocean’s
How does salinity change with depth?
Typically, the salinity decreases from the surface ocean to deep waters is very small, from about 36 g/L (ppt) at the surface to 35 g/L (ppt) in the deep water, thus there is a very small density decrease with depth given a constant temperature. The salinity of seawater also affects it’s freezing point temperature.
Why does the temperature increase with depth?
‘ In contrast, the Earth gets hotter and hotter at depth primarily because the energy of radioactive decay is leaking outwards from the core of the planet. While this geothermal energy is transferred to ocean water along the seafloor, the effect is so small that it’s immeasurable by direct means.
How is pressure related to mass?
Boyle’s law states that at constant temperature the volume of a given mass of a dry gas is inversely proportional to its pressure.
Does pressure depend on density?
Pressure within a liquid depends only on the density of the liquid, the acceleration due to gravity, and the depth within the liquid. The pressure exerted by such a static liquid increases linearly with increasing depth.
Are pressure and mass directly proportional?
Gay-Lussac’s law, Amontons’ law or the pressure law was found by Joseph Louis Gay-Lussac in 1808. It states that, for a given mass and constant volume of an ideal gas, the pressure exerted on the sides of its container is directly proportional to its absolute temperature.
Is P and V directly proportional?
Boyle’s law states that pressure (P) and volume (V) are inversely proportional. Charles’ law states that volume (V) and temperature (T) are directly proportional. Gay-Lussac’s law states that pressure (P) and temperature (T) are directly proportional.
Is Avogadro’s Law direct or inverse?
Boyle showed that the volume of a sample of a gas is inversely proportional to its pressure (Boyle’s law), Charles and Gay-Lussac demonstrated that the volume of a gas is directly proportional to its temperature (in kelvins) at constant pressure (Charles’s law), and Avogadro postulated that the volume of a gas is …
What is r equal to?
The value of the gas constant ‘R’ depends on the units used for pressure, volume and temperature. R = 0.0821 liter·atm/mol·K. R = 8.3145 J/mol·K.
What is the ideal gas constant R?
The gas constant (also known as the molar gas constant, universal gas constant, or ideal gas constant) is denoted by the symbol R or R….Gas constant.
|Values of R||Units|
|US Customary Units|
What are the 5 gas laws?
Gas Laws: Boyle’s Law, Charle’s Law, Gay-Lussac’s Law, Avogadro’s Law.
Why is R the universal gas constant?
Solution : The value of gas constant R is same for all gasest and is independent of the nature of gas. Hence it is called universal gas constant.
What is r in the ideal gas law equation answers com?
What is ideal gas constant r? It is the value of the constant which appears in an equation relating the volume, temperature and pressure of an ideal gas. Its value is 8.314 4621 Joules/(Mol K).
What does the ideal gas law describe?
the law that the product of the pressure and the volume of one gram molecule of an ideal gas is equal to the product of the absolute temperature of the gas and the universal gas constant.
What does Dalton’s Law of Partial Pressures say?
Dalton’s law, the statement that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the individual component gases. The partial pressure is the pressure that each gas would exert if it alone occupied the volume of the mixture at the same temperature.
What does the ideal gas law calculate?
The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).
What units are used in the ideal gas law?
For the purposes of gas laws, the standard unit for temperature is the Kelvin. To be safe, convert all temperatures to Kelvin at the beginning of a problem. The two most common pressure units are atmospheres and torr (or mm Hg – read millimeters of mercury).
What is an ideal gas quizlet?
Ideal gas. a hypothetical gas consisting of identical particles of zero volume with no intermolecular forces undergoing perfectly elastic collisions.