What are two causes of density currents?
Density currents are driven by differences in water density, which can result from gradients in water temperature, salinity, dissolved uncharged substances, or suspended particles and are also affected by pressure.
What is one of the two causes of density differences that create deep currents?
A current deep within the ocean, which moves because of density differences (caused by differences in water temperature and salinity).
What affects the density of deep ocean currents?
Deep ocean currents are density-driven and differ from surface currents in scale, speed, and energy. Water density is affected by the temperature, salinity (saltiness), and depth of the water. The colder and saltier the ocean water, the denser it is.
What causes 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.
What are deep density currents?
Deep water currents move very slowly, usually around 0.8-1.2 in (2-3 cm) per second. They dominate approximately 90% of the oceans' circulation. Water circulation of this type is called thermohaline circulation.
Which two changes would increase the density of ocean water?
The two main factors that affect density of ocean water are the temperature of the water and the salinity of the water. The density of ocean water continuously increases with decreasing temperature until the water freezes.
What affects water density?
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). Water density changes with temperature and salinity.
What causes water density?
High salinity makes water denser. This is because there is more salt packed into the water. High temperature makes water less dense. As water gets warmer, its molecules spread out, so it becomes less dense.
What causes change in density?
Changes of density In general, density can be changed by changing either the pressure or the temperature. Increasing the pressure always increases the density of a material. Increasing the temperature generally decreases the density, but there are notable exceptions to this generalization.
What causes deep water currents apex?
Deep ocean currents (also known as Thermohaline Circulation) are caused by: The density of sea water varies globally due to differences in temperature and salinity. Surface water is heated by the sun, and warm water is less dense than cold water. Similarly, fresh water is less dense than salty water.
What are the 2 types of ocean currents?
There are two main types of ocean currents: currents driven mainly by wind and currents mainly driven by density differences.
What two things cause density differences in ocean water?
There are two main factors that make ocean water more or less dense: temperature and salinity. Cold, salty water is denser than warm, fresher water and will sink below the less dense layer. Density is defined as the measure of a material's mass (e.g. grams) divided by its volume (e.g. milliliters).
What makes water dense?
High salinity makes water denser. This is because there is more salt packed into the water. High temperature makes water less dense. As water gets warmer, its molecules spread out, so it becomes less dense.
What is the cause of density?
The density of a substance is the relationship between the mass of the substance and how much space it takes up (volume). The mass of atoms, their size, and how they are arranged determine the density of a substance. Density equals the mass of the substance divided by its volume; D = m/v.
What are 2 ways to increase density?
You can change the density of a substance by heating it, cooling it, or by adding something to it. If an object sinks in water, it's because the object has a higher density than the water.
How do deep ocean currents occur?
Deep currents, also known as thermohaline circulation, result from differences in water density. These currents occur when cold, dense water at the poles sinks. Surface water flows to replace sinking water, causing a conveyor belt-like effect of water circulating around the globe on a 1000-year journey.
What are the causes of ocean currents?
Oceanic currents are driven by three main factors:
- The rise and fall of the tides. Tides create a current in the oceans, which are strongest near the shore, and in bays and estuaries along the coast. …
- Wind. Winds drive currents that are at or near the ocean's surface. …
- Thermohaline circulation.
Feb 26, 2021
How does density affect ocean water?
The density of seawater plays a vital role in causing ocean currents and circulating heat because of the fact that dense water sinks below less dense. Salinity, temperature and depth all affect the density of seawater.
What are the two causes of density in deep current waters quizlet?
What are the two causes of density in deep current waters? a. c. Oxygen content of the water and high temperatures .
What can cause an increase in the density of ocean water?
The density of water increases as the salinity increases. The density of seawater (salinity greater than 24.7) increases as temperature decreases at all temperatures above the freezing point. The density of seawater is increased by increasing pressure.
What two things cause density differences in water?
There are two main factors that make ocean water more or less dense: temperature and salinity. Cold, salty water is denser than warm, fresher water and will sink below the less dense layer. Density is defined as the measure of a material's mass (e.g. grams) divided by its volume (e.g. milliliters).
What are the two main factors that affect deep ocean currents?
Deep currents are driven by temperature and water density/salinity.
What causes deep ocean currents quizlet?
What causes deep water currents to move? It is caused by temperature and salinity of the water. It is from the surface to 200m deep. It is caused by wind action, Earth's spin, and the shape of the continents.
What are the two factors that can cause the volume of water in the ocean to change?
Sea water has characteristic properties (e.g. density) that are independent of sample size. There are two main factors that make ocean water more or less dense: temperature and salinity. Cold, salty water is denser than warm, fresher water and will sink below the less dense layer.
What are the 2 major types of ocean currents?
The speed of ocean currents is more than that of upwelling or downwelling which are the vertical movements of ocean water. There are two types of ocean currents: Warm Ocean Currents. Cold Ocean Currents.
What three ways that the density of ocean water can increase?
The density of seawater can be increased by reducing its temperature, increasing its salinity , or increasing the pressure.
What increases the density of sea water?
The density of water increases as the salinity increases. The density of seawater (salinity greater than 24.7) increases as temperature decreases at all temperatures above the freezing point. The density of seawater is increased by increasing pressure.
What are the causes of surface ocean currents and deep ocean currents?
Patterns of surface currents are determined by wind direction, Coriolis forces from the Earth's rotation, and the position of landforms that interact with the currents. Surface wind-driven currents generate upwelling currents in conjunction with landforms, creating deepwater currents.
What are 2 ways that the density of seawater can be increased?
The density of seawater can be increased by reducing its temperature, increasing its salinity , or increasing the pressure. Pressure has the least impact on density as water is fairly incompressible, so pressure effects are not very significant except at extreme depths.
What are the two causes of ocean currents?
Ocean currents are driven by wind, water density differences, and tides….Oceanic currents are driven by three main factors:
- The rise and fall of the tides. …
- Wind. …
- Thermohaline circulation.
Feb 26, 2021