After an aircraft has passed through a volcanic cloud which has blocked the total pressure probe inlet of the airspeed indicator, the pilot begins a stabilized descent and finds that the indicated airspeed:

1) A pitot tube covered by ice which blocks the ram air inlet will affect the following instrument (s):

2) The position error of the static vent on which the altimeter is connected varies substantially with the:

3) A leak in the pitot total pressure line of a non-pressurized aircraft to an airspeed indicator would cause it to:

4) After an aircraft has passed through a volcanic cloud which has blocked the total pressure probe inlet of the airspeed indicator, the pilot begins a stabilized descent and finds that the indicated airspeed:

5) If the static source to an airspeed indicator (ASI) becomes blocked during a descent the instrument will: