As warm air rises, it leaves a 'void' which is filled by colder air being drawn in from the surrounding area. We feel this movement as wind.
it gets warmer as it rises
it gets warmer
it gets warmer
It's density decreases, so will rise (or float) above surrounding cooler air.
it gets warmer as it rises
Air inside the balloon is heated. Hot air is less dense than the surrounding air, and thus the balloon rises.
The hot air is less dense than the air surrounding the balloon, so it floats in the surrounding air.
The thermal energy from the air around a fire is transferred to the surrounding air through convection. As the air near the fire heats up, it becomes less dense and rises, creating a current of hot air that transfers the thermal energy to the surrounding air. This process helps distribute the heat more evenly in the surrounding area.
Baloon filled with hydrogen gas float in air or rises if the quntity of gas it contain is adjusted so that the average density of the balloon is just eguall to the density of the surrounding air.The weight of the displaces air is then eguall to the weight of the balloon
It expands and cools
cold air replaces it
The temperature of air is decreased.