GEOLOGY

Detailed explanation-1: -Onnmountains too water flows downwards, not upwards, thus the given statement is false.

Detailed explanation-2: -Liquids generally flow from a higher level to lower level. So river water flows from higher altitudes to lower altitudes due to its fluidity property.

Detailed explanation-3: -Yes, fluid always flows from high pressure to low pressure. Head is the pressure produces by the pressure producing mechanism (pump, gravity, etc.).

Detailed explanation-4: -The lower the atmospheric pressure, the harder it will be for the pump to do its job, which is to pump water or other liquids from one location to another. The decrease in pressure, due to higher altitude, means that the pump will have to work much harder.

Detailed explanation-5: -Water always flows downwards due to the gravity of the earth.