How We Know How Old the Earth is
~60 min · 15 stations
How We Know How Old the Earth is is a self-paced learning path in Earth Sciences & Geography, free to read, written at General Public / 9th Grade reading level. Across 15 structured stations, you will work through the core ideas step by step, each with a short quiz to check your understanding. By the end you will be able to identify historical methods used to estimate planetary age; describe how sedimentary layers record geological time; analyze biological evidence found in ancient strata.
Conductor
Welcome aboard the timeline express. We are traveling back four billion years to find the very first rocks. Keep your hands inside the carriage as we explore the deep past.
What you will learn
Complete each station to unlock the next.
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