Match the words in the left-hand column to the appropriate blank in the sentences in the right-hand column. use each word only once.
1. the slowly increasing distance between south america and africa is due to . seafloor spreading
2. old faithful geyser at yellowstone national park in the united states acquires its energy from a hot spot
3. layered exposed by erosion can be seen when looking at the grand canyon in the united states sedimentary rock
4. australia is composed of relatively old and thick . continental crust
5. the extremely deep ocean marianas trench is a result of . subduction
6. found in the atlantic ocean between north america and europe is composed of dense and relatively young rock. seafloor crust
7. the earthquakes that occur in southern california generally occur above a