Unit 3: Geologists: investigating rock porosity

Dense and porous rock formations can be used to permanently store carbon dioxide underground. We started the session by looking at different types of rocks and writing down observations:

We then chose sandstone to check its porosity:

 

Here are our findings:

Testing rock porosity – sandstone

Sample number	Mass before (g)	Mass after  (g)	Difference  (g)
1	68.0	68.7	0.7
2	60.3	64.6	4.3
3	79.8	85.5	5.7
4	54.2	58.1	3.9
5	72.8	78.3	5.5
6	82.6	88.8	6.2
7	38.7	41.3	2.6
8	27.2	27.9	0.7
9	88.8	93.7	4.9
10	53.8	57.9	4.1