Code breaking
What invention was used for code breaking and communications?
The telegraph
When did Britain establish a naval blockade?
1914, as soon as the war began.
What is the U-boat short for?
Undersea boat
In the 1880's who wanted to build a navy that rivalled out of Britain?
Germany
What was a Hydrophone used for?
Used to hear sounds underwater and locate U-boats as well as allowing important messages to be delivered so soldiers across the front knew the plans for defence attack.
At night time for long distance communication
What sea was declared as a war zone?
North Sea
What battle did the U-boat play a major role in?
Battle of Jutland
What is the Kaiser Wilhelm Canal?
The Canal that ran all the way through Denmark
What did the first hydrophone consist of?
Consisted of a tube with a thin membrane covering the submerged end and the listener's ear on the other end.
What was Room 40?
A famous code-breaking unit that intercepted and decrypted German naval codes, this played an important role in brining the us into the war.
What happened as a cause of the extreme blockade?
763,000 Germans starved to death as per result of food shortages
Who invented the U-boat? What was their Objective?
Germany, with the objective of rivalling the British Navy.
When did Britain have the biggest Navy?
1914
Where was the Hydrophone invented?
East London College
What would happen to the communication lines?
They would be cut or intercepted by the enemy.
What did the blockade lead to?
Led to revolutions and uprisings that happened in Germany
By 1914 how many of Germany's U-boats sunk?
140, almost a third of the world's merchant ships
What happened on May 31st 1916
A battle where 250 ships, 40 dreadnoughts, and 8500 lives were lost at sea.
What is a wireless radio?
a machine for detecting the positions of enemy wireless stations, which can’t be located on wired radios.
What was the last resort for communication?
The use of pigeons.
What do the British say happened?
The food shortages were post war, caused by the revolutions in 1918-19, and nothing to do with the Blockades.
What did Germany plan/want to do with the U-boats?
Sink British merchant ships carrying supplies to Britain.
Who countries did Britain depend on for food and supplies?
Canada and the US
What is one thing the wireless radio was used for?
Trace the positions of German submarines, surface naval vessels, and to warn soldiers of an attack of poisonous gas, giving them time to put on gas masks further preventing death from poisonous gas.