Earth System Topics: Oceans Show all Earth System Topics: Oceans
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Exploring oil spills
Kevin Theissen, University of St. Thomas (MN)
This activity combines a hands-on demonstration and a follow-up homework assignment designed for students to investigate oil spill clean-up.
ConcepTest: Drivers of Ocean Salinity Variations
Imagine ocean circulation stopped suddenly, with half of the world's salts in the northern hemisphere and half in the southern hemisphere. Assuming no net difference between evaporation and precipitation ...
ConcepTest: Ocean Element Profiles - 2
Which element could have a depth profile in the ocean that looks like this? A. It probably has a source from the atmosphere B. It is probably an essential nutrient for phytoplankton C. It probably has a source ...
ConcepTest: Ocean Element Profiles - 1
Which element could have a depth profile in the ocean that looks like this? A. Oxygen, an element produced during photosynthesis B. Barium, an element required in trace amounts for micro-organisms C. Nitrogen, a ...
ConcepTest: Box Modelling: Fluxes & Turnover Times
Which of the following is true of the simplified ocean-atmosphere water cycle depicted in the box model below? A. There is a net flux of water from ocean to atmosphere. B. There is a net flux of water from ...
ConcepTest: Ocean Salinity #2
How would salinity of the oceans vary if the oceans were twice as deep as present and held approximately twice as much water? a. Salinity would be less than present b. Salinity would be greater than present c. ...
ConcepTest: Ocean Salinity #1
How would the salinity of the oceans vary if the continents and oceans each covered 50% of Earth's surface and precipitation and evaporation were similar to present? a. salinity would be lower than today b. ...
ConcepTest: Ocean Conveyer Belt Speed 2
Adding more freshwater to the North Atlantic Ocean would cause the global ocean conveyer belt to a. slow down b. speed up c. undergo no change
ConcepTest: Ocean Conveyer Belt Speed 1
Adding more salt to the North Atlantic Ocean would cause the global ocean conveyer belt to a. slow down b. speed up c. undergo no change
ConcepTest: Ocean Salinity During an Ice Age
One million years ago ice sheets covered much of the Earth's land surface during an ice age. How did this affect the salinity of the oceans? a. Oceans were saltier than today. b. Oceans were less salty than ...