Starting in the coal mines, by the mid-19th century elevators were operated with steam power and were used for moving goods in bulk in mines and factories. These steam driven devices were soon being applied to a diverse set of purposes - in 1823, two architects working in London, Burton and Hormer, built and operated a novel tourist attraction, which they called the "ascending room". It elevated paying customers to a considerable height in the center of London, allowing them a magnificent panoramic view of downtown. 

The hydraulic crane was invented by Sir William Armstrong in 1846, primarily for use at the Tyneside docks for loading cargo. These quickly supplanted the earlier steam driven elevators: exploiting Pascal's law, they provided a much greater force. A water pump supplied a variable level of water pressure to a plunger encased inside a vertical cylinder, allowing the level of the platform (carrying a heavy load) to be raised and lowered. Counterweights and balances were also used to increase the lifting power of the apparatus.

1. How were goods moved?
2. driven by what?
3. What attracted tourists?
4. Where was it built?
5. When was it built?
6. By whom?
7. What did Armstrong build?
8. In what year?
9. What was the primary purpose?
10. Where were the elevators used?
11. Was the crane a success?
12. What did it replace?
13. Why were they successful?
14. What  increased the lift power?
15. What did the attraction do?
16. What was the occupation of those who built it?
17. What was exploited?
18. What applied the pressure?
19. Was it a constant force?
20. What did this allow to be accomplished?
21. When were the elevators used?

Provide a numbered list of answers.
1. elevators
2. steam
3. Ascending Room
4. London
5. 1823
6. Burton and Hormer
7. hydraulic crane
8. 1846
9. Loading Cargo
10. mines and factories
11. yes
12. steam driven elevators:
13. they provided a much greater force
14. Counterweights
15. It lifted customers up to show downtown.
16. they were two architects
17. Pascal's law
18. A water pump
19. No
20. level of the platform to be raised and lowered
21. by the mid-19th century