Months, years or even centuries aren't helpful for thinking about earth's long history.
Because the time span of earth's past is so great,geologist use the geologic time scale to show earths history.
:they didn't discover much, but they use fossils,DNA,and reacher many things.:
There are many forms of earth science, and therefore many names for those who study aspects of earth--geologists, geophysics scientists, ecologists, hydrologists, sedimentologists, and more.
Geologists believe that the movement of the Earth's plates is caused by the heat from the Earth's core creating convection currents in the mantle. These currents cause the plates to slowly drift and move over time, a process known as plate tectonics.
Geologists study the Earth's structure and composition, which includes the different layers of the Earth and the types of minerals and rocks present. They also study Earth's history, including the processes that have shaped the planet over millions of years.
geology
A geologist studies Earth's structure
James Hutton
James Hutton
There are many forms of earth science, and therefore many names for those who study aspects of earth--geologists, geophysics scientists, ecologists, hydrologists, sedimentologists, and more.
Components of the earth that changed the least over time include the earth's crust and mantle and the structure of the earth's interior. Other structures that have changed very little include the components of the atmosphere.
Geologists believe that the movement of the Earth's plates is caused by the heat from the Earth's core creating convection currents in the mantle. These currents cause the plates to slowly drift and move over time, a process known as plate tectonics.
Geologists study the Earth's structure and composition, which includes the different layers of the Earth and the types of minerals and rocks present. They also study Earth's history, including the processes that have shaped the planet over millions of years.
geology
A geologist studies Earth's structure
Geologists can't use rocks from Earth to determine the planet's age because those rocks have all been recycled through the rock cycle over time. This means that the original rocks from when Earth formed no longer exist. Instead, geologists use radiometric dating of rocks from Earth's surface to estimate its age.
The earth has changed very little over time.
Before Darwin proposed his Theory of Evolution, it was widely believed that the Earth was only 6,000 years old. Geologists noticed that the Earth changed gradually over time (tectonic plates shifting to create volcanoes, mountains, etc) in order for such changes to create the Earth known at that time, it would have to be building up such changes over millions of years, thus creating the idea of Earth's immense age which allowed for evolution to create the diverse species known today. This theory of gradualism (as it was called) was adapted into Darwin's theory to apply to the species and their gradual changes.
Geologists have divided Earth's history into manageable units called eons, eras, periods, and epochs. These divisions help scientists study and understand the Earth's geological and biological history over millions of years.