GeoJeopardy! Fridays

Time for GeoJeopardy! Fridays, because it's a new year. At least for some of us. :-)

- The Earth -

The Alps are an example of the fold type of these; the Tetons are the fault-block type

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Outside the U.S., the main areas where these spouting hot springs occur are Iceland & New Zealand

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The inner core of the Earth is thought to be a solid ball composed mainly of nickel & this metal

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About a tenth of the Earth's surface is covered by this treeless region of the Arctic

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Triggered by earthquakes, these destructive sea waves have been known to travel at nearly 500 mph

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All the answers as well as any other previous GeoJeopardy! questions can be found over at my website by clicking the link.