World War 1 inventions

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Across
  1. 4. Able to Fire down on soldiers in trenches
  2. 6. Sent speeding scraps of metal onto the soldiers
  3. 8. Destroyed lungs, causing slow, painful deaths
Down
  1. 1. Known as a “silent killer”
  2. 2. Spreads fire by launching burning fuel onto the enemy
  3. 3. Soldiers had to pass miles and miles of this ___to get to the enemy.
  4. 5. Could fire 400 to 600 bullets a minute
  5. 7. Causes heavy damage and cannot be destroyed easily