You're likely thinking of pyroclastic flow - which is actually hot ash and gases rather than lava. Wikipedia has an article if you're interested. see related link.
Pyroclastic flow
The property that describes how easily electricity travels through an object is called conductivity. Materials with high conductivity allow electric current to flow easily, while materials with low conductivity impede the flow of electricity.
The property that describes how easily electricity travels through an object is called conductivity. Materials with high conductivity allow electricity to flow easily, while materials with low conductivity impede the flow of electricity.
It is forced to flow downhill by the Earth's gravity.
Downhill.
downhill
Water flows downhill, and the topography of that region just happens to be downhill to the east.
As with all rivers the Nile cannot defy gravity and therefore flows 'downhill'.
Rivers can flow in any compass direction, a river will always flow downhill.
They are wetThey flow downhill
Gravity, rivers flow downhill
Downhill would be the only sure answer. Depending on the river they will flow in many different directions during the course of their travels. The Nile moves North, the Mississippi moves South, the Amazon goes mostly East.