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Radiocarbon dating could be used to date which of the following?
younger than the rocks it intrudes
isotopes
carbon dioxide in the atmosphere
radioactivity
60,000-year-old mammoth bone
30,000 years old
are basically the same as they were in the geologic past
are constant
Atoms with the same atomic number but different mass numbers are called ____.
younger than the rocks it intrudes
isotopes
carbon dioxide in the atmosphere
radioactivity
60,000-year-old mammoth bone
30,000 years old
are basically the same as they were in the geologic past
are constant
The geological processes that shape Earth's features today ____.
younger than the rocks it intrudes
isotopes
carbon dioxide in the atmosphere
radioactivity
60,000-year-old mammoth bone
30,000 years old
are basically the same as they were in the geologic past
are constant
In living things, what is the source of the carbon-14 that is used in radiocarbon dating?
younger than the rocks it intrudes
isotopes
carbon dioxide in the atmosphere
radioactivity
60,000-year-old mammoth bone
30,000 years old
are basically the same as they were in the geologic past
are constant
Radiometric dating is possible because the rates of decay of radioactive isotopes ____.
younger than the rocks it intrudes
isotopes
carbon dioxide in the atmosphere
radioactivity
60,000-year-old mammoth bone
30,000 years old
are basically the same as they were in the geologic past
are constant
According to the principle of cross-cutting relationships, an intrusive rock body is ____.
younger than the rocks it intrudes
isotopes
carbon dioxide in the atmosphere
radioactivity
60,000-year-old mammoth bone
30,000 years old
are basically the same as they were in the geologic past
are constant
When the nucleus of an atom decays spontaneously, it's called:
younger than the rocks it intrudes
isotopes
carbon dioxide in the atmosphere
radioactivity
60,000-year-old mammoth bone
30,000 years old
are basically the same as they were in the geologic past
are constant
If the half-life of an unstable isotope is 10,000 years, and only 1/8 of the radioactive parent remains in a sample, how old is the sample?
younger than the rocks it intrudes
isotopes
carbon dioxide in the atmosphere
radioactivity
60,000-year-old mammoth bone
30,000 years old
are basically the same as they were in the geologic past
are constant
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