Secret Codes and Ciphers: Hidden Messages
Shifted alphabets, dots and dashes, warming invisible ink, and the machine an army trusted too much. Crack the history of secret writing from Rome to World War II.
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Questions in this quiz
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- Question 1 of 3
A cipher that hides a message by shifting every letter the same number of places is named after which Roman leader?Tap an answer
Multiple Choice · 20s
- Question 2 · unlocks after question 1
- Question 3 · unlocks after question 2
- During World War II, Germany's Enigma cipher machine was secretly cracked by codebreakers working at...Multiple Choice · 20s
- What is a substitution cipher?Multiple Choice · 20s
- How do you reveal a message written in lemon juice 'invisible ink'?Multiple Choice · 20s
- Before radio, sailors spelled out messages between ships by holding two of what in changing positions?Multiple Choice · 20s
- A transposition cipher hides a message by changing the ORDER of its letters rather than replacing them.True / False · 20s
- In World War II, the US military built a famously unbreakable spoken code on which language?Multiple Choice · 20s
- The word 'cryptography' comes from Greek words meaning...Multiple Choice · 20s
- What do we call the secret piece of information needed to lock or unlock a cipher? (one word)Type Answer · 30s
- Which code, built from dots and dashes, is named after its American inventor? (one or two words)Type Answer · 30s
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