The following questions will require you to conduct your own research. Choose any that interest you. Write your answers in your notebook, or create a poster or presentation.

Topic 1

What is the deepest human-made hole ever created? What are some practical limitations to how far humans are able to dig below Earth’s surface?

Topic 2

Research techniques that scientists use to learn about Earth’s internal structure given that it is not possible to drill down further than a few kilometres. For example, why do scientists believe that Earth’s core is composed mostly of iron and how do they know that the outer core is liquid whereas the inner core is solid?

Topic 3

Create a table of the ten most common elements found in Earth’s crust. Include the percentage composition of each element. What can be concluded about the distribution of elements in the
crust?

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