Radiometric dating is based on
A) decay of uranium-238 to lead-206.
B) sequence of rocks and the relative position of one layer to another.
C) proportions of radioactive isotopes and their decay products.
D) the half-life of radioactive atoms.
Answer: C
You might also like to view...
At the same moment from the top of a building 3.0 × 102 m tall, one rock is dropped and one is thrown downward with an initial velocity of . Both of them experience negligible air resistance
How much EARLIER does the thrown rock strike the ground? A) 0.95 s B) 0.86 s C) 0.67 s D) They land at exactly the same time.
?Unpolarized light is passed through three successive Polaroid filters, each with its transmission axis at 45.0°to the preceding filter. What percentage of light gets through?
A. ?0% B. ?12.5% C. ?25.0% D. ?50.0% E. ?33.3%
In a hydrogen atom, a transition from the 2nd to the 1st excited state will produce
A) a dark absorption line. B) an ultraviolet spectral line. C) no emission line. D) three different emission lines. E) the bright red Balmer alpha emission line.
The temperature of a quantity of an ideal gas is
a. one measure of its ability to transfer thermal energy to another body. b. proportional to the average molecular kinetic energy of the molecules. c. proportional to the internal energy of the gas. d. correctly described by all the statements above. e. correctly described only by (a) and (b) above.