Ball and ring; Plate with hole

Diagram of apparatus :

Experiment :

4. The ring is now heated. Will the ball fit through the ring?
   Yes
   No
   Don't know

5. Explain why you have given this answer.
   

6. The ball is now heated. Will the ball fit through the ring?
   Yes
   No
   Don't know

7. Explain why you have given this answer.