Scientists study old rocks. They look for tiny bits of gas. This gas tells us how old a rock is. It helps us learn about the past. We can see how the Earth changed. Do you like old rocks?
39 words
More to explore
✨ What else?
Related topics you might enjoy
🔬 Go deeper
More advanced topics to explore
📚
Content adapted from Wikipedia
|
Readability: FK 12.7
|
Vital Level 5