Examkin

Soru

Zorluk: OrtaPhysical Geography of the World

Regarding global ocean floor relief and deep ocean thermohaline circulation, which of the following statements are correct?

  1. Thermohaline circulation is primarily driven by ocean water density gradients generated by variations in temperature and salinity.Cevap
  2. Antarctic Bottom Water (AABW) represents the densest water mass in the global ocean and spreads along the ocean floor into deep basins.Cevap
  3. C
    Major ocean trenches and deeps are predominantly formed along divergent plate boundaries where oceanic crust is created.
  4. D
    Cold surface ocean currents generally flow from tropical equatorial regions toward high-latitude polar regions.

Cevap

The statements confirming that thermohaline circulation is driven by temperature and salinity density gradients and that Antarctic Bottom Water is the densest global water mass are correct.
Thermohaline circulation is driven by density variations controlled by seawater temperature and salinity. Antarctic Bottom Water forms due to intense cooling and brine rejection in polar seas, making it the densest ocean mass sinking into deep ocean basins.

Adım Adım Çözüm

1
Analyze the driving mechanisms of deep ocean circulation.
Thermohaline circulation operates on density differences caused by temperature (cooling increases density) and salinity (evaporation/freezing increases density).
This differentiates deep density-driven thermohaline circulation from wind-driven surface circulation.
2
Evaluate the density and formation of major deep ocean water masses.
Antarctic Bottom Water (AABW) is colder and more saline than North Atlantic Deep Water (NADW), making it the densest water mass on Earth.
Brine rejection during sea ice formation around Antarctica yields ultra-dense bottom water.
3
Examine tectonic associations of ocean floor bathymetry features.
Ocean trenches occur at subduction boundaries (convergent margins), not divergent margins.
Divergent margins host mid-ocean ridges and rift zones, while deep trenches mark subduction zones.
4
Verify direction of heat transport by surface ocean currents.
Warm currents flow equator-to-pole, while cold currents flow pole-to-equator.
Surface current gyres transport excess tropical solar energy toward energy-deficient polar zones.

Anahtar Kavram

Thermohaline Circulation and Ocean Relief Features
Tahmini Süre:1m 30s
Bu soruyu puanla

Konular

Physical Geography of the World

Bu konudan daha fazla soru