The term for finding the age of a rock is
The absolute age of an object refers to
e. exactly how many years before today an object was formed
All of the following statements about nuclear decay are true except
b. heat is an important reactant in nuclear decay
The nuclear decay of
d. a neutron splitting
After nuclear decay,
According to the authors of "Geological Time," how many pieces of information are needed about a radioactive isotope to use the isotope in absolute dating?
Radioactive dating methods
d. include measurements based off of radioactive isotopes
The rate of decay for radioactive samples
e. is constant for any given isotope
How is the decay of radioactive samples typically expressed?
Which of the following isotopic systems has a half-life of 48.8 billion years?
Who wrote "Geological Time"?
c. David E. Fastovsky, Thomas Jordan, Frank Press, and John Sibbick
The authors compare using the rubdium/strontium isotopic system to date remains from the past several thousand years to
c. time a hundred meter dash with a sundial
Radiometric dating can only take place using samples obtained from
a. igneous rock
The Mesozoic Era lasted from
d. 251 to 65 million years ago
The Paleoxoic Era did not include
d. Cretaceous Period
Geological time 1 (beginning-absolute)