Cracking codes

Read the text on page 78 in your book and answer the questions.

When did Marian Rejewski cracked the Enigma I code?

• 1932

• 1939

• During World War 2

Where did Marian Rejewski work?

• Poland

• Austria

• Germany

Listen to the recording. Which one refers to the word Polish in the text?

• A

• B

What does cypher mean in the first paragraph?

• messages in code

• puzzle games

• cut

What was Enigma I?

• A German device that encrypted messages.

• A Polish device that decoded German messages.

• A German ballistis missile.

When World War 2 broke out, Poland kept their knowledge of the German messages for themselves.

• True.

• False.

What does break out mean in "A few weeks before World War II broke out"?

• start

• end

• invade

Lives were saved thanks to Enigma I.

• True.

• False.

When the text says "In 1944, they were important in the battle to free Europe," it mentions who was trying to dominate Europe.

• True.

• False.

According to the text, if it weren't for Rejewski's work, Hitler could have won World War II.

• True.

• False.