You need to know the age of a rock collected during a field research project. How do you select which radioactive dating method to use?
What will be an ideal response?
First, the method I choose depends on the radioactive elements that could be present in the rock. So, I need to identify the minerals in the rock and then, knowing the composition of the minerals, decide which method is appropriate. Second, I need to make some guess of the age of the rock so that I use a method with an appropriate half life for dating rocks of this age. Table 7.1 provides information on minerals that I can date and the age range of application of each method.
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Which of the following is NOT an example of a mineral resource being used in a consumptive manner?
A. limestone to make concrete B. aluminum for making cans C. phosphorites for making fertilizer D. graphite to make pencils E. diamond tipped cutting tools
Glass is rather opaque to ________ radiation.
A. only intermediate-wavelength B. long-wavelength C. all wavelengths D. short-wavelength
The process that diffuses light in many directions by atmospheric particles, and contributes to blue skies and red sunsets is called___________
Fill in the blank(s) with correct word
Precipitation associated with cold fronts is usually more intense and localized than precipitation from warm fronts
Indicate whether the statement is true or false.