Storiascopio · Era 1 of 12 · primary year 3
Birth of the Earth
about 4.5 billion years ago · The Earth
In short
The Earth formed about 4.54 billion years ago as many rocky bodies came together. Collisions and the decay of radioactive elements made it very hot at first. Heavy materials sank towards the core, while lighter ones formed the mantle and the crust.
Why it matters This sorting into layers shaped the inside of the planet we live on.
Source: U.S. Geological Survey, “Age of the Earth”
Where we are in the era “The Earth before us”
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about 13.8 billion years agoEvent 5 of 25about 66 million years ago
Your turn
Name ______________________ Class ______ Date __________
When did it happen? Find the date at the top and write it here:
Tell it in your own words: what happened?
Draw the scene below.
storiascopio.com/en/event/birth-of-the-earth/ · free worksheet, you may photocopy it for your class