Test 10 Questions Quiz BPL Gas - Balloon Pilot License - Human Performance and limitations, no time limit

1 - In which situation is it NOT possible to achieve a pressure compensation between the middle ear and the environment?
2 - What is the percentage of oxygen in the atmosphere at 6000 ft?
3 - Carbon monoxide poisoning can be caused by...
4 - Which statement is correct with regard to the short-term memory?
5 - Which factor can lead to human error?
6 - The majority of aviation accidents are caused by...
7 - At which altitude is the atmospheric pressure approximately half the MSL value (1013 hPa)?
8 - Which characteristic is important when choosing sunglasses used by pilots?
9 - What is an indication for a macho attitude?
10 - Air consists of oxygen, nitrogen and other gases. What is the approximate percentage of other gases?