absolute dating Flashcards
1
Q
elements are unstable. over time they break down (decay) and release particles and energy
A
radioactive decay
2
Q
igneous rocks form when
A
they harden to become rock
3
Q
the amount of the original element of the original element
A
parent isolope
4
Q
when parent isotope goes down and the amount of the new element goes up
A
daughter isotope
5
Q
what do geologists use to determine the absolute age of a rock
A
radioactive dating
6
Q
scientists use ages of igneous intrusions/extrusions and relative
A
dating sedimentary rocks
7
Q
where are the oldest rocks found
A
moon; 4 billion years
8
Q
all matter is made of
A
atoms
