The following BBC Bitesize link will give you help on how to answer these questions.
https://www.bbc.co.uk/bitesize/topics/z2j22nb
The questions are based on the waves section from the GCSE Combined Science specification – Page 155,
GCSE Exam Revision Specification Focus Questions and Answers
Revision questions and detailed answers for your GCSE exam preparation
The following BBC Bitesize link will give you help on how to answer these questions.
https://www.bbc.co.uk/bitesize/topics/z2j22nb
The questions are based on the waves section from the GCSE Combined Science specification – Page 155,