Q 01/05

How many countries border the North Sea?

A) Seven

B) Five

C) Six

D) Four

Answer · why

A) Seven

Great Britain, Norway, Denmark, Germany, the Netherlands, Belgium and France.

Q 02/05

Through which two bodies of water does the North Sea connect to the Atlantic?

A) The Irish Sea and the Baltic

B) The Skagerrak and the Kattegat

C) The English Channel and the Norwegian Sea

D) The Bay of Biscay and the Celtic Sea

Answer · why

C) The English Channel and the Norwegian Sea

It reaches the Baltic through the Skagerrak and Kattegat, the narrow straits around Denmark.

Q 03/05

What is the mean depth of the North Sea?

A) About 150 metres

B) About 300 metres

C) About 600 metres

D) About 90 metres

Answer · why

D) About 90 metres

It sits on the continental shelf; only the Norwegian trench, up to 725 metres deep, breaks the pattern.

Q 04/05

What is the maximum depth, in metres, of the deep trench that runs from Oslo to north of Bergen?

A) 150

B) 300

C) 450

D) 725

Answer · why

D) 725

It runs parallel to Norway's coast from Oslo to north of Bergen and holds the Troll gas field.

Q 05/05

The Dogger Bank, the North Sea's finest fishing ground, is what kind of geological feature?

A) A moraine of glacial debris

B) A ridge of undersea volcanoes

C) A drowned coral reef

D) A sunken chalk escarpment

Answer · why

A) A moraine of glacial debris

It rises to just 15 to 30 metres below the surface.