Q 01/05

How does the Arctic rank among the world's five oceans by size?

A) Fourth largest

B) Largest

C) Smallest

D) Third largest

Answer · why

C) Smallest

It is also the shallowest and coldest, covering about 14 million square kilometres, roughly the size of Antarctica.

Q 02/05

The Arctic Ocean is the only ocean smaller than which country?

A) Russia

B) China

C) Canada

D) United States

Answer · why

A) Russia

Russia's land area of 17.1 million square kilometres beats the ocean's 14.06 million.

Q 03/05

Some oceanographers liken the Arctic Ocean to which enclosed sea, calling it the 'Arctic ___ Sea'?

A) Caribbean Sea

B) Mediterranean

C) Baltic Sea

D) Sea of Japan

Answer · why

B) Mediterranean

It has also been described as roughly equivalent to an estuary of the Atlantic.

Q 04/05

Which ocean has the lowest average salinity of the five?

A) Atlantic

B) Pacific

C) Indian

D) Arctic

Answer · why

D) Arctic

Low evaporation, heavy river inflow and limited exchange with saltier oceans keep it fresh.

Q 05/05

The Arctic Ocean connects to the Pacific through which passage?

A) Fram Strait

B) Hudson Strait

C) Davis Strait

D) Bering Strait

Answer · why

D) Bering Strait

On the Atlantic side its border is the Greenland-Scotland Ridge.