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In what direction do hot and cold gases move?
Hot gases move upwards as they are less dense and lighter, while cold gases move downwards as they are more dense and heavier. This is due to the natural process of convection, where warmer air rises and cooler air sinks.
What moves upwards and downwards when the diaphragm contracts and flattens?
The lungs move downwards when the diaphragm contracts and flattens, allowing air to be drawn into the lungs.
What air causes molecules to move slowly?
Extremely cold air.
Which is faster in diffusion cold air or hot air?
Hot air diffuses faster than cold air because the molecules in hot air move more quickly, spreading out and mixing with the surrounding air at a faster rate. Cold air molecules move more slowly, resulting in slower diffusion.
When a cold air mass meets a warm air mass and does not move its called a what?
Stationary front
Why does the cold air near ice lolly move downwards?
Cold air, being more compacted in it's gaseous molecules, is heavier than warmer air, so it sinks.
Why does the cold air near a ice lolly move downwards?
Cold air, being more compacted in it's gaseous molecules, is heavier than warmer air, so it sinks.
Does cold air go up or down in a room?
Cold air tends to sink and move downwards in a room, while warm air rises and moves upwards.
Does cold air travel up or down in a room?
Cold air tends to sink and move downwards in a room, while warm air rises and moves upwards.
In what direction do hot and cold gases move?
Hot gases move upwards as they are less dense and lighter, while cold gases move downwards as they are more dense and heavier. This is due to the natural process of convection, where warmer air rises and cooler air sinks.
Why does a cloud of dry ice flow downwards?
It flows downwards because it is cold and cold air sinkse. The most important reason why it flows downwards is that dry ice is made of CO2 / carbon dioxide which = 1.5 times heavier than the air that we inhale.
What moves upwards and downwards when the diaphragm contracts and flattens?
The lungs move downwards when the diaphragm contracts and flattens, allowing air to be drawn into the lungs.
Does hot air move into cold air or does cold air move into hot air?
Both. Since hot air is less dense than cold air, the hot air rises as the cold air falls (i.e. as the cold air displaces the hot air). If you were to dye hot air & then inject it into the center of a room, you would observe the dyed hot air rising. What you may not realize is that gravity draws the (invisible) surrounding dense cold air downwards as it displaces the (visible) less dense dyed hot air. === Previous Posters Answer: Hot air rises
When does an object not move downwards under the effect of gravity?
On every object on earth, earth exerts a force on it which is equal to the weight of object. When we throw a object it earth exerts force on it and it came downwards but if we throw it with escape velocity then it will not move downwards.
In which direction does air move: from hot to cold or from cold to hot?
Air moves from hot to cold.
How does air above a cold surface?
how does air above cold surface move
Why does flames of a fire rise even though gravity pulls things downwards?
Because the warm particles/air from the fire are lighter than the cold air around it. The warm air, being lighter, rises, and the cold, heavy air sinks. Cold air is pulled into the bottom of the fire, warmed and continues the cycle.
