Explain how scientists use geologic time to determine the age of landforms.
Answers
Answer:
scientists have developed four different methods of determining the age of the earth. By using these methods, or a combination of them, the age of geological formations created by past events and even the fossilized bones of prehistoric animals can be determined.
Based on the research done by scientists, the Geologic Column, a graph that illustrates earth age, was developed. The Column, with its names for the epochs and eras of time, illustrates what scientists think was taking place in earth history. A
Let's take a brief look at each of these methods.
The three primary methods are:
Radiation Measurement
Stratigraphic Superposition
The Fossil Record
Once you finish looking at the methods, return here to do a Special Teacher/Student Geologic Time Activity
From these methods of dating, scientists have determined that the earth as we know it seems to be about 4.6 billion years old. It is theorized that the earth got its start as a result of what is called the "Big Bang nearly 6 billion years ago. The Big Bang theory holds that all the planets, stars, solar systems, galaxies, etc., are the result of a huge explosion that sent material speeding through space. As time passed, the gravitational force of larger chucks of material attracted the smaller chunks and formed the galaxies and solar systems we see today.
The geologist use the carbon dating of rocks and take the help of C 14 isotope.
Explanation:
- Geologist makes the use of the geologic history to guide and understand the timeline of the earth. The geologic time scale is a standard timeline that tells the time of the entire earth.
- Starting from the Precambrian i.e 4.6 billion years form the origin of the earth and mapping of the continent and ocean floors from the mid-Atlantic ridge.
- They use techniques of the relative and absolute dating and identify the existence of oceans, volcanic eruptions, and duration of dune fields.
- The use of absolute dating can be found in the radiometric techniques to precisely determine the age of biological and physical processes.
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- brainly.in/question/12502772 answered by Koustav12365.