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: 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: Magnetic Inclination part of Examples
The diagram below shows the magnetic inclination determined for three lava flows preserved in a cliff. (Assume that Earth's magnetic field was in the same orientation as it is today.) What happened to the ...

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: Rock Transformation part of Examples
The graph below illustrates how the temperature changed with time for part of the rock cycle. Which of the following processes is best represented by the graph? a. sediment is lithified to form sedimentary rock b. ...

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: Einsteinium Half-life part of Examples
The isotope Einsteinium-253 has a half-life of 20 days. If you began an experiment with an 80-gram sample of Einsteinium-253, how much would remain after 60 days? a. 60 grams b. 40 grams c. 20 grams d. 10 grams

ConcepTest: Identifying Oxides part of Examples
Which of the following formulas represents an oxide? a. FeS2 b. KAlSi3O8 c. Fe2O3 d. CaSO4 · 2H2O

ConcepTest: Igneous Process Identification part of Examples
An ice cube melting in hot tea is analogous to which igneous process? a. fractional crystallization. b. assimilation. c. partial melting. d. intrusion.

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