Question

1. absolute dating
2. eon
3. era
4. geologic time
5. geologic timeline
6. half - life
7. mass extinction event
8. period
9. radioactive decay
10. relative dating

a visualization of how the earth and its lifeforms have changed through geologic time
the process of determining the order of events in geologic time
the longest unit of geological time
the extinction of a large number of species in a short period of time that is usually caused by a catastrophic global event like an asteroid
a major division of geologic time that is a subdivision of an eon
the process by which an unstable nucleus of an atom spontaneously releases energy through the emission of radiation used in dating fossils and rocks
process of determining a specific date of an object
a division of geologic time and a subdivision of an era
the period of time covering the physical formation and development of the earth
the time required for half the atoms in an element to divide in half

Explanation:

To solve this matching problem, we analyze each term and its definition:

1. absolute dating: The process of determining a specific date of an object (matches "process of determining a specific date of an object").
2. eon: The longest unit of geological time (matches "the longest unit of geological time").
3. era: A major division of geologic time that is a subdivision of an eon (matches "a major division of geologic time that is a subdivision of an eon").
4. geologic time: The period of time covering the physical formation and development of the earth (matches "the period of time covering the physical formation and development of the earth").
5. geologic timeline: A visualization of how the earth and its lifeforms have changed through geologic time (matches "a visualization of how the earth and its lifeforms have changed through geologic time").
6. half - life: The time required for half the atoms in an element to divide in half (matches "the time required for half the atoms in an element to divide in half").
7. mass extinction event: The extinction of a large number of species in a short period of time that is usually caused by a catastrophic global event like an asteroid (matches this definition).
8. period: A division of geologic time and a subdivision of an era (matches "a division of geologic time and a subdivision of an era").
9. radioactive decay: The process by which an unstable nucleus of an atom spontaneously releases energy through the emission of radiation used in dating fossils and rocks (matches this definition).
10. relative dating: The process of determining the order of events in geologic time (matches "the process of determining the order of events in geologic time").

Answer:

1. absolute dating - process of determining a specific date of an object
2. eon - the longest unit of geological time
3. era - a major division of geologic time that is a subdivision of an eon
4. geologic time - the period of time covering the physical formation and development of the earth
5. geologic timeline - a visualization of how the earth and its lifeforms have changed through geologic time
6. half - life - the time required for half the atoms in an element to divide in half
7. mass extinction event - the extinction of a large number of species in a short period of time that is usually caused by a catastrophic global event like an asteroid
8. period - a division of geologic time and a subdivision of an era
9. radioactive decay - the process by which an unstable nucleus of an atom spontaneously releases energy through the emission of radiation used in dating fossils and rocks
10. relative dating - the process of determining the order of events in geologic time