Geologic Timescale Module
- Drag and drop terms from the "Key" table on the right into the matching areas on the chart. For vertical areas, drag and drop near the top of the space.
- To place a term back in the table, click on it.
- When finished, click "SUBMIT". The chart will be locked, your score will be displayed and incorrect answers will be highligted in red.
- Click "RESET" to clear the chart and shuffle the key.