Go for a bike ride with lots of lovely, healthy picnic food to a picnic spot. Pick a destination, pack a picnic and get on yer bike!
| Hi, The fossil cards can be found in the same file as the letter cards from Activity 1.
The discovery of radioactivity and its application to dating rocks is perhaps one of the greatest scientific achievements affecting the Earth Sciences.
With the discovery of radioactive isotopes more then one hundred years ago, scientists quickly realized that the radioactive decay of materials found in rocks could be used to date the rocks and consequently change the "relative" geologic time scale into an "absolute" time scale.
This interactive asks you to use your knowledge of relative dating. Help us work out the relative ages of the layers of sedimentary rocks.
You need to work out the order in which rocks were formed, from youngest to oldest. Remember that younger sedimentary rocks lie on top of older ones and were horizontal when formed.