The time necessary for half of the atoms of the unstable parent element to decay to the new, more
stable daughter element is the isotope's ____________________. Fill in the blank(s) with the appropriate word(s).
half-life
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Today, the United States leads the world in estimated coal reserves
Indicate whether the statement is true or false
The accomplishments of the United States Exploring Expedition are largely unknown with little evidence
remaining of the voyages. a. True b. False
A student commented, "A metamorphic rock must have a greater relative age than a sedimentary rock." Is the student using the term "relative age" here in the correct context, and why or why not?
A) No. Relative age must compare the age of at least three things. B) Yes. The ages of the rocks are ordered in relation to each other. C) No. Relative age should state a specific number of years in which the event occurred. D) Yes, the term is used in the correct context, however knowing how long ago these types of rocks formed would be useful.
Extratropical cyclones often form from interactions in the interior of a single air mass
Indicate whether the statement is true or false