| Picture | Answer | % Correct |
|---|---|---|
![]() | Coal | 88%
|
![]() | Limestone | 75%
|
![]() | Sandstone | 75%
|
![]() | Shale | 75%
|
![]() | Conglomerate | 63%
|
![]() | Gypsum | 63%
|
![]() | Chert | 50%
|
![]() | Siltstone | 50%
|
![]() | Dolomite | 25%
|
![]() | Travertine | 13%
|