Inventions

123456789101112
Across
  1. 2. The commonest source of power and energy in our homes and offices.
  2. 4. A device for determining directions by means of a magnetic needle or group of needles turning freely on a pivot and pointing to the magnetic north.
  3. 6. A flying machine.
  4. 7. A machine the size of a small room that can move people and goods between floors.
  5. 8. A flying machine with two rotating blades and no wings.
  6. 10. A destructive device intended to be dropped from a plane over an enemy target.
  7. 12. Large piece of cloth attached to strings that allows a person to jump from a plane and land safely.
Down
  1. 1. A two-wheeled means of transport without an engine.
  2. 3. An electronic machine that stores and retrieves data.
  3. 5. A common means of communication today - invented in 1876
  4. 9. A method of photographing the bones of the body.
  5. 11. The glass part of an electrical device that gives off light.