Shetland , also called the Shetland Islands, is a subarctic archipelago that lies northeast of the island of Great Britain and forms part of Scotland, United Kingdom. 

The islands lie some to the northeast of Orkney and southeast of the Faroe Islands. They form part of the division between the Atlantic Ocean to the west and the North Sea to the east. The total area is , and the population totalled 23,210 in 2011. Comprising the Shetland constituency of the Scottish Parliament, Shetland Islands Council is one of the 32 council areas of Scotland; the islands' administrative centre and only burgh is Lerwick, which has also been the capital of Shetland since taking over from Scalloway in 1708. 

The largest island, known as the "Mainland", has an area of , making it the third-largest Scottish island and the fifth-largest of the British Isles. There are an additional 15 inhabited islands. The archipelago has an oceanic climate, a complex geology, a rugged coastline and many low, rolling hills. 

Humans have lived in Shetland since the Mesolithic period. The earliest written references to the islands date back to Roman times. The early historic period was dominated by Scandinavian influences, especially from Norway, and the islands did not become part of Scotland until the 15th century. When Scotland became part of the Kingdom of Great Britain in 1707, trade with northern Europe decreased. Fishing has continued to be an important aspect of the economy up to the present day. The discovery of North Sea oil in the 1970s significantly boosted Shetland's economy, employment and public sector revenues.

Now, provide a numbered list of answers to these questions:

1. What is the biggest island of Shetland called?
2. How does it rank for island sizes of Scotland?
3. How about among the British Isles?
4. Where is it located in reference to Great Britain?
5. What two bodies of water does it help separate?
6. Which direction is the Atlantic?
7. And the North Sea?
8. How many people live there?
9. It's part of the council area of where?
10. Which is part of the council area of where?
11. How many island have no residents?
12. How long has it been established?
13. When was it first mentioned in writing?
14. When did it become part of Scotland?
15. And when did Scotland become part of Great Britain?
16. What dropped significantly when that occurred?
17. With who?
18. What industry was a major part of Shetland's economy?
19. Is that still true today?
20. When was oil found there?

Numbered answers:
1. Mainland.
2. Third-largest.
3. Fifth-largest.
4. Northeast.
5. Atlantic Ocean and the North Sea.
6. West.
7. East.
8. 23,210.
9. Shetland Islands Council.
10. Scotland.
11. Fifteen.
12. Since the Mesolithic period.
13. Roman times
14. 15th century.
15. 1707.
16. Trade.
17. Northern Europe.
18. Fishing.
19. Yes.
20. 1970s.