We will provide a list of web sites with relevant information. The geologic time scale is divided into eons, eras, periods, epochs, and ages. Our activities, and the time scale for download above, ...

Prehistoric time line, geologic time scale, photos, facts, maps, and more from National Geographic. Humans have walked the Earth for 190,000 years, a mere blip in Earth's 4.5-billion-year history.

There is little dispute within the scientific community that humans are changing Earth's climate on a decadal to century time-scale. By the end of this century ... underdeveloped potential of the deep ...

According to the International Union of Geological Sciences (IUGS), the professional organization in charge of defining Earth’s time scale ... you start naming geologic-time terms, you need ...

I like to use a meter stick and be very intentional with my spacing to model time as a scale. I also avoid using the far right ... to sort events in the order they have happened. Show the geologic ...