ConcepTest: Drivers of Ocean Salinity Variations part of Examples
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: Box Modelling: Fluxes & Turnover Times part of Examples
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 Element Profiles - 1 part of Examples
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: Change in Porportion of Parent Isotopes Over Time part of Examples
Which graph below best represents the change in the proportion of unstable (parent) radioactive isotopes with time? a. A b. B c. C d. D

ConcepTest: Western U.S. Volcanoes and Earthquakes #1 part of Examples
The map below shows the plate configurations along the western margin of North America. At which of the locations would we be most likely to find active volcanoes? a. A b. B c. C d. D e. E

ConcepTest: Radioactive Decay part of Examples
If radioactive decay began with 400,000 parent atoms, how many would be left after 3 half lives? a. 200,000 b. 100,000 c. 50,000 d. 25,000

ConcepTest: Relative Time Diagram #3 part of Examples
Match the features in the relative time diagram below with the events described in the short sentence. Assume all rocks are sedimentary unless otherwise indicated. Which unit is composed of granite and older than ...

ConcepTest: Relative Time Diagram #2 part of Examples
Match the features in the relative time diagram below with the events described in the short sentences. Assume all rocks are sedimentary unless otherwise indicated. Which unit was formed before A but after E? a. C ...

ConcepTest: Sugar-Rock Analogy part of Examples
Water containing dissolved sugar evaporates to leave a deposit of sugar in the bottom of a glass. This could be seen as an analog for the formation of a type of a. igneous rock b. metamorphic rock c. sedimentary ...

ConcepTest: Cake-Rock Analogy part of Examples
Baking a cake could be seen as an analog for the formation of a. igneous rock b. metamorphic rock c. sedimentary rock.