Year 11 Marine Science - Unit 1 - Data Test Revision

What region includes the continental rise, slope and shelf?

• The deep ocean-basin floor

• The mid-ocean ridge

• The continental seamount

• The continental margin

What is the average length of the continental shelf?

• under 25 km

• 65 km

• 100 km

• 650 km

Name at least two (2) bathymetric features you may find in the ocean basin.

A surface ocean (a)   is the movement of water on the surface of the ocean.

Large systems of circulating (or rotating) ocean currents are called what?

• Ekman Spiral

• Gyres

• Upwelling

• Eddies

Density _______ with depth in the ocean.

• decreases

• increases

• is constant

In the ocean, temperature _______ with depth.

• decreases

• increases

• is constant

Salinity is the saltiness of the water and in the ocean it __________ with depth.

• decreases

• increases

• is constant

How would you describe the trend of the of the atmospheric CO₂ as depicted in the graph over time? Why might you see fluctuations within each year?

What is the approximate depth of the Manihiki plateau? (Tip: Click on the "Zoom in" button below to see clearly)

• 1000 m below sea level.

• 2000-3000 m below sea level.

• 3000-4000 m below sea level.