Precambrian Continents
Discussion Questions
These sample discussion questions were submitted by students. They can be used as part of a
class discussion, as an essay topic, or as a student project idea.

Find other shields like the Canadian Shield. What might have caused the craton to be
exposed in these places? – submitted by Vikram Sivaraja

What types of rocks and minerals would you expect to find at a craton? What
characteristics of a craton identify it as such? – submitted by Lianne Blodgett

Even though internal heat is always generated by the Earth, shouldn't Earth's
temperature be declining if it's continuously cooling? Why isn't Earth cooling as rapidly
anymore? Do humans have control over Earth's temperature? – submitted by Lianne
Blodgett