Walking Through Time Activity: The Age of the Earth
By studying rocks, scientists have figured out how long the Earth has been around. And the answer is: a long, long time. Numbers this big are hard to imagine. So heres an activity that will help. You need: In this activity, you will take a walk through time. Every step you take will represent fifteen million years. At one end of the sidewalk, use the sidewalk chalk to make a mark on the pavement....