Radar(CHS)
Sonar & Battle of Atlantic
Codebreaking
Battle of Midway
WILDCARD
100

Was the radar developed by the navy or air force?

Air force

100

Was the sonar developed by the navy or air force

Navy

100

Why was codebreaking important?

Allowed countries to communicate safely without interceptions

100

What was this battle characterized by? 

Aircrafts 

100

What were the Fleet Problems?

The time when the U.S. increased the power of their aircrafts and navy with experiments. 

200

What was one thing that the Sonar helped with? 

1. Gave enemy aircraft location

2. Protected naval vessels and saved valuable time 

3. Made military operations more efficient 

200

What did the sonar allow the navy to detect?(two things)

Icebergs and German U-boats

200

Name of Germany's ciphering machine:

Name of U.S's ciphering machine: 

Engima

SIGABA

200

What was ONE of the reasons why Japan's plan failed?

Overconfidence (Victory's Disease)

Interception by SIGABA



200

What specific type of ship replaced the battleship as the most important and decisive vessel in a naval fleet during WW2?

Aircraft carrier

300

What was the Battle of Britain?

Royal Airforce defended Britain from several aerial attacks by Germany

300

What was the Battle of Atlantic

-Between British naval vessels and U-boats

-Germany tried disrupting Allied supply lines

300

What was codebreaking?

Process of decoding enemies' secret codes through ciphering machines
300

Why was Midway Atoll vital for Japan and the U.S?

Acted as a strategic outpost for controlling the Pacific theater (defense barrier for Hawaii)

300

The massive D-Day invasion was officially known by what code name?

Operation Overlord

400

Why was the Battle of Britain important?

It prevented Germany from gaining air superiority and invading Britain

400

Why was the Battle of the Atlantic important?

Allowed Allied nations to send supplies to each other


400

The SIGABA system allowed which two major Allied leaders to safely communicate and plan attacks?

FDR and Winston Churchill

400

APPROXIMATELY, how long was the decisive moment during the Battle of Midway?

5 minutes

400

Which U.S. aircraft carrier was famously patched up after the Battle of the Coral Sea to fight at Midway?

USS Yorktown

500

What very important event was the Chain Home System used in?

Battle of Britain 

500

What very important event was the sonar used in?

Battle of Atlantic

500

How many workers were needed to operate SIGABA?

One
500

Name of U.S. dive bomber that sunk 4 Japanese aircraft carriers

Douglas SBD Dauntless


500

What type of aerial warfare involved targeting enemy cities and factories to destroy a nation's economic ability to wage war?

Strategic bombing

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