Natural Sciences Admissions Assessment; 2x interviews.
Problem-solving questions based on previous knowledge.
Practice answering questions out loud.
Do practice papers and look over your A-level syllabi.
Ask follow questions if you are confused!
Remember this advice isn't official. There is no guarantee it will reflect your experience because university applications can change between years. Check the official Cambridge and Oxford websites for more accurate information on this year's application format and the required tests.
Also, someone else's experience may not reflect your own. Most interviews are more like conversations than tests and like, any conversation, they are quite interactive.
Test taken:
Number of interviews: 2
Time between interviews: 30 minutes
Length of interviews: Unknown
Online interview: No
The questions usually cut straight to the topic. Most involved solving a question using some spare paper for notes. The interviewers adjusted the questions according to what I had or hadn't already done in school.
My
Use practice papers and look over the A Level syllabus.
Practise what you know, they will let you ask questions but it is best if you can apply your knowledge to what you know and be honest if you haven't learnt the rest. Don't be afraid to ask for clarification if you are confused!