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: 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: 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: Isotopic Dating with Parent to Daughter Ratios part of Examples
The half-life of a radioactive isotope is 500 million years. Scientists testing a rock sample discover that the sample contains three times as many daughter isotopes as parent isotopes. What is the age of the rock? ...

ConcepTest: Which is not a Mineral? part of Examples
Which of the following can not be classified as a mineral? a. salt b. ice c. diamond d. glass

ConcepTest: Raisin-Rock Analogy part of Examples
Grapes dried slowly in a warm oven are converted to raisins. This could be seen as an analog for the formation of a. igneous rock b. metamorphic rock c. sedimentary rock.

ConcepTest: Temperature and Depth of Rock Formation #2 part of Examples
The diagram below illustrates five potential combinations of temperature and depth that are characteristic of different rock types. Answer the question that follows using the diagram. Which letter is the best ...

ConcepTest: Cross-Section of Plate Boundaries part of Examples
The map below shows the plate configurations along the western margin of North America. Which of the four diagrams on the right best represents a cross section through the outer layers of Earth along the line X-Y?

ConcepTest: Relative Layer Age #29 part of Examples
Examine the image of rock layers below. Tilting must have occurred Image courtesy of USGS a. after A was deposited b. after B was deposited and before A was deposited c. before C was deposited d. after C was ...