Q 01/05

The Caspian Sea holds what distinction among the world's lakes and seas?

A) Highest above sea level

B) Deepest lake

C) Saltiest sea

D) Largest inland one

Answer · why

D) Largest inland one

Despite its name and its briny water, it is often listed as the world's biggest lake.

Q 02/05

How many countries have a coastline on the Caspian Sea?

A) Three

B) Five

C) Four

D) Seven

Answer · why

B) Five

Kazakhstan has the longest shoreline and Russia the shortest.

Q 03/05

In Iran, on the southern shore, the Caspian is known by what name, after a province on its coast?

A) The Persian Sea

B) The Gilan Sea

C) The Tabriz Sea

D) The Mazandaran Sea

Answer · why

D) The Mazandaran Sea

That shore is also the saltiest part of the sea, since little fresh water flows in there.

Q 04/05

What is the surface area of the Caspian Sea, excluding the saline lagoon on its eastern shore?

A) About 150,000 sq km, similar to Nepal

B) About 71,000 sq km, similar to Ireland

C) About 1.2 million sq km, similar to South Africa

D) About 371,000 sq km, similar to Japan

Answer · why

D) About 371,000 sq km, similar to Japan

It holds 40 to 44 percent of all the lake water on Earth and covers more area than Germany.

Q 05/05

The surface of the Caspian Sea lies roughly how far below global sea level?

A) About 2 metres

B) About 27 metres

C) About 100 metres

D) About 400 metres

Answer · why

B) About 27 metres

Baku, on its shore, is the lowest-lying national capital in the world.