Marvellous machines

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Across
  1. 3. It's a material. Planes are made if this.
  2. 5. It's a machine. It's used for making toasts.
  3. 7. It's a machine. It's used for washing your clothes.
  4. 9. It's a material. Earrings are made of this.
  5. 10. It's a machine. It's used for keeping food cold.
Down
  1. 1. It's a machine. It's used for sending e-mails.
  2. 2. It's a machine. It's used for heating your food.
  3. 4. It's a machines. They are used for listening to music.
  4. 6. It's a material. Earrings are made of this.
  5. 8. It's a machine. It's used for cleaning the floor.