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 - 2 part of Examples
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 ...

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: 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: 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: 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: Hydologic Cycle #12 part of Examples
The following diagram illustrates the Hydrologic Cycle. Match the arrow being considered with the process it represents. Arrow 12 best represents what process? a. evaporation b. precipitation c. transpiration d. ...

ConcepTest: Hydrologic Cycle #1 part of Examples
The following diagram illustrates the Hydrologic Cycle. Match the arrow being considered with the process it represents. Arrow 1 best represents what process? a. evaporation b. precipitation c. transpiration d. ...