Which of the following is a source of dissolved salt in the ocean?
Which of the following is a source of dissolved salt in the ocean?
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.
What are the 2 main dissolved substances in the ocean?
Seawater has many different gases dissolved in it, especially nitrogen, oxygen and carbon dioxide. It exchanges these gases with the atmosphere to keep a balance between the ocean and the atmosphere.
What element is the most commonly dissolved in the ocean?
Figure 14.4: Ocean water is composed of many substances. The salts include sodium chloride, magnesium chloride, and calcium chloride. Perhaps the most important substance dissolved in the ocean is salt.
Which of the following is the most important factor affecting seawater density?
The density of seawater depends on temperature and salinity. Higher temperatures decrease the density of seawater, while higher salinity increases the density of seawater. The following figure shows how density is affected by temperature and salinity.
What are the three factors that affect seawater density?
Salinity, temperature and depth all affect the density of seawater.
What three factors can change the density of water?
Water density changes with temperature and salinity. Density is measured as mass (g) per unit of volume (cm³). Water is densest at 3.98°C and is least dense at 0°C (freezing point).
How can you change the density of water?
When the same amount of water is heated or cooled, its density changes. When the water is heated, it expands, increasing in volume.
What two factors affect density?
The density of an object or quantity of matter is its mass divided by its volume. This is usually measured under standard conditions for temperature and pressure: 0°C and 1 atmosphere of pressure. One factor affecting the density of a material is how concentrated the atoms are in a given volume.
What factors do not affect density?
In other words, the size or amount of a material/substance does not affect its density. 3. Does temperature affect density?
Does pH affect density?
The lower pH is known to increase the volume and decrease the density of mature red blood cells. The marked effect of pH on cellular fractionation could be correlated with the smaller change in rat reticulocyte density and volume in acid medium.
What factors cause differences in density?
The size, mass, and arrangement of atoms affect the density of a substance. How might these factors work together to cause a substance to have a high density? A substance with smaller more massive atoms that are close together is going to have a higher density.
Can the density change?
Density is the amount of mass located in a specific volume. The density of an object can change if either the mass or volume of the object is changed. If an object is more dense than water, it will sink; if it is less dense than water, it will float.
What affects element’s density?
The density depends on the state of matter (solids, liquids, gas) and conditions including temperature etc. While neucleons (protons and neutrons) are responsible for the mass of the atom, electrons are responsible for its size. The neucleons are in the tiny nucleus of the atom.
How is density affected by pressure?
Density and pressure/temperature Density is directly proportional to pressure and indirectly proportional to temperature. As pressure increases, with temperature constant, density increases. Conversely when temperature increases, with pressure constant, density decreases.
Is density equal to pressure?
Density is the mass per unit volume of a substance or object, defined as ρ=m/V. The SI unit of density is kg/m3. kg/m 3 . Pressure is the force per unit perpendicular area over which the force is applied, p=F/A.
How do you find density with pressure and height?
Pressure is the weight of the fluid mg divided by the area A supporting it (the area of the bottom of the container): P=mgA P = mg A . P=hρg P = h ρ g , where P is the pressure, h is the height of the liquid, ρ is the density of the liquid, and g is the acceleration due to gravity.
What is density and pressure?
The pressure is the measure of force acting on a unit area. Density is the measure of how closely any given entity is packed, or it is the ratio of the mass of the entity to its volume. The relation between pressure and density is direct.
How do you find density with pressure and area?
Multiply the material density by the number of units in the column. In this example, multiply 1025 by 11. The result is the mass of 11 cubic yards of the material. Calculate the pressure by dividing the force, or weight, by the area.
What is pressure and its types?
The pressure is defined as the force acting per unit area. Absolute pressure: Pressure which is related to reference pressure is known as absolute pressure. Differential pressure: The difference between the two pressures is equal to the differential pressure.
How do you find pressure when given mass and area?
Pressure and force are related, and so you can calculate one if you know the other by using the physics equation, P = F/A. Because pressure is force divided by area, its meter-kilogram-second (MKS) units are newtons per square meter, or N/m2.
How do you calculate total pressure?
The total pressure of a mixture of gases can be defined as the sum of the pressures of each individual gas: Ptotal=P1+P2+… +Pn. + P n . The partial pressure of an individual gas is equal to the total pressure multiplied by the mole fraction of that gas.
How do you find pressure from area?
Answer. Pressure and force are related, and so you can calculate one if you know the other by using the physics equation, P = F/A. Because pressure is force divided by area, its meter-kilogram-second (MKS) units are newtons per square meter, or N/m2.
What is formula for mass?
One can consider the mass of an object as a measure of how much physical “stuff” makes up that object. mass=density×volume (m=ρV). Density is a measure of mass per unit of volume, so the mass of an object can be determined by multiplying density by volume.
What is the formula of mass and weight?
Weight is a measure of the force of gravity pulling down on an object. It depends on the object’s mass and the acceleration due to gravity, which is 9.8 m/s2 on Earth. The formula for calculating weight is F = m × 9.8 m/s2, where F is the object’s weight in Newtons (N) and m is the object’s mass in kilograms.