Yes. That's actually where the word comes from.
It doesn't. It has many, and its because there used to be a glacier there. The whole of Scandinavia was a glacier as a matter of fact. Then some tousand years ago, it started to pull back and melt...
No
During the ice age.
The longest fjord is Sognefjorden which is around 204 km long
Visit the Fjords of Norway
The Untouched Life in the Wilderness
Dr. Henry N. Pollack on the Certainty of Global Warming
Visit the Pulpit Rock in Norway