Earth's Time Scale Flashcards
What is the Geological time scale?
It is a record of the life forms and and geological events in Earth’s history.
How did scientists develop the time scale?
By studying rock layers and fossils worldwide.
How did radioactive data help the time scale?
It helped determine the divisions in the time scale.
How were coal and limestone formed?
During the carboniferous period, there were tropical weather conditions in the UK, and this is how they were formed.
In which period was chalk formed?
The Cretaceous period.
Why was chalk formed in the Cretaceous period?
As this is when warm tropical seas were present around the shores of the UK.
Name five periods.
Neogene, Paleogene, Cretaceous, Jurassic, Triassic, Permian, Carboniferous, Devonian, Silurian, Ordovician, Cambrian, Precambrian
