When a sarcomere contracts and thin filaments move over thick filaments you would expect to see

It would be better if you attached some options, as it's difficult to give the correct answer without any of it. Anyway, I've got it: When a sarcomere contracts and thin filaments move over thick filaments you would expect to see I bands appear smaller. 

Ican not answer this question since it does not have enough information

Be prepared.experiment breaking point of rubber bands measured in certain amount of temperature communication

that's all i luck!