Test 10 Questions bpl-hot-air, no time limit

1 - Which dangerous attitudes are often combined?
2 - The stretch-out of the envelope of a hot-air balloon should be made:
3 - What is the purpose of the semi-circular rule?
4 - A balloon pilot decides to use one or more separate gas containers for initial heating during buildup. To ensure a safe buildup ...
5 - On what frequency shall a blind transmission be made?
6 - Which direction corresponds to 'compass north' (CN)?
7 - The character of an air mass is given by what properties?
8 - What statement is correct with regard to the density of a gas?
9 - From which altitude on does the body usually react to the decreasing atmospheric pressure?
10 - What cause may result in a reduction of volume of a free balloon?