An upward flow of (warm) air is known as a Thermal .
The tropopause acts as a lid preventing air flow from rising upward. It is the boundary between the troposphere and the stratosphere and plays a crucial role in controlling vertical air movements in the atmosphere.
when the weight of warm air in the stack is less than the cool air around the stack , it causes an upward flow pulling air thru the furnace
when the weight of warm air in the stack is less than the cool air around the stack , it causes an upward flow pulling air thru the furnace
Gastroesophageal reflux disease is the upward flow of acid from the stomach into the esophagus.
by transfer of heat by the movement of air ,gases or heated liquid between areas of unequal density,upward flow of warm air
Winds flow upwards from the eye in a cyclone, because the warm air from the sea rises. This is in addition to winds flowing in a clockwise direction in the southern hemisphere and an anti-clockwise direction in the northern hemisphere.
The flame of a candle rises upward due to the convection currents created by the heat from the flame. As the flame burns, it heats the surrounding air, causing it to become less dense and rise. This creates a continuous flow of hot air moving upward, carrying the flame along with it.
Heat. As the air expands (as it's heated), it rises and causes air to flow upward.
An upward moving current of air is called an updraft.
The upward force acting on the wing of an airplane in flight is called lift. It is generated by the flow of air over the wing due to differences in air pressure created by the wing's shape and angle of attack.
The river does not flow upwards. The Earth is round, the Nile simply flows South to North - on a map it just looks like it flows "upward"
It is a force which acts in the upward direction.