A sample of volcanic ash is used to demonstrate leaf fossils in lapilli tuff. Learn how the distinctive texture of the volcanic rock and the included fossils
can be used to help correlate it with other volcanic rocks in the region.
BasicStudents matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient)Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
AdvancedStudents matched to this level are ready for material that requires superior performance and mastery.