Explain potassium 40 dating
The biggest assumption is that, to first order, the number of asteroids and comets hitting the Earth and the Moon was the same as for Mercury, Venus, and Mars. The bottom line is that the more craters one sees, the older the surface is.This can be interpreted in two ways: why it is important to know the age of a planet or how is age dating important in determining the age of a planet?Based on our study of meteorites and rocks from the Moon, as well as modeling the formation of planets, it is believed (pretty much well-established) that all of the objects in the Solar System formed very quickly about 4.56 billion years ago.When we age date a planet, we are actually just dating the age of the surface, not the whole planet.
For others, all we are doing is getting a relative age, using things like the formation of craters and other features on a surface.This decay, or loss of energy, results in an atom (element) of one type, called the parent nuclide transforming to an atom of a different type (another element or another isotope of the same element), named the daughter nuclide.By studying other planets, we are learning more about our own planet.The effects of impacts and how they might affect us here on Earth, global climate change (Venus vs.
Earth) and what could happen to Earth in an extreme case, etc.From Wikipedia, radioactive decay is the process in which an unstable atomic nucleus spontaneously loses energy by emitting ionizing particles and radiation.