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Warm air is less dense, as the atoms are moving fast, creating the heat and spacing the atoms out farther apart. The atoms rise above the denser, slower moving atoms; therefore, hot air rises. (the hot air can't push below the cooler air, which is less dense. its like tennis balls bouncing on a wall)
What else can I help you with?
Why does warm air move upward?
Air that has been heated has molecules that are more energetic, and this activity increase the spaces between molecules. The result is that a volume of heated air has fewer molecules than cooler air, and is displaced by the denser (heavier) cool air. It rises until it reaches the level in the atomosphere with the same density, or until it loses its heat to surrounding air. This cyclic heating and cooling creates air convection. In the atmosphere, denser high-pressure air masses (usually cooler) will displace warmer air masses as they move across the surface. Warmer, more humid air is pushed upward along the boundaries of cooler, drier air, which produces weather fronts.
What happen to air when it gets warm?
The individual air molecules' kinetic energy increases, thus, increasing the amount of collisions between the molecules. It expands, so it becomes less dense than the surrounding air and therefore it rises (floats) upwards.
How are convection currents in the air and water alike?
Convection currents in the air and water are both driven by differences in temperature. In both cases, warmer air or water rises while cooler air or water sinks, creating a circular flow. These currents play a key role in distributing heat and regulating temperature within their respective mediums.
What boundary causes the formation of mountains?
The boundary that causes the formation of mountains is called a convergent boundary. This occurs when two tectonic plates collide, causing the Earth's crust to be pushed upwards, creating mountain ranges.
Does air move from sea to land?
Along the coasts, winds tend to blow onshore during the day and offshore during the evening. This is because land heats up and cools down quicker than water. During the day, air over land heats up and rises. Cooler air over the water then moves onshore (sea breeze). At night, air over the water stays warm and rises. The now cooler air over land is then pushed out to sea (land breeze).
Cooler denser air is pulled down by?
Cooler denser air is pulled down by gravity but is also pushed down by the rising hot air. This process is called convection.
What is called when two plates collide and one pushes upwards?
Two plates colliding and one being pushed upwards is called subduction.
What is magma pushed upwards from the core of the earth and flows through openings called?
lava
What is difference between natural and forced convection?
Natural Convection occurs when a warmer less dense fluid is pushed away by a cooler denser fluid. Forced Convection occurs when an outside force pushes a fluid, such as water of air, to make it move and transfer heat. A fan is a perfect example. Im pretty sure air, and heat vents are examples too. An air conditioner is definitely an example.
Does hot air go up or down?
Hot air rises because it is less dense than cooler air. As the hot air expands, it becomes less dense and is pushed up by the denser, cooler air surrounding it. This creates convection currents, with hot air rising and cooler air sinking.
How would you define heat transfer by convection?
Imagine you have a heater in a room. How does it heat the entire room when only the heater is hot? By convection! As the heater warms the air around it, this warm air travels upwards. When it hits the ceiling of the room, it travels outward towards the walls (pushed away from center by the rising column of air) By the time it reaches the walls it has cooled slightly and sinks (remember hot air is lighter and rises, while cool air is denser and sinks). It then travels along the floor of the room pushed by the sinking column of cooler air until it reaches the heater. Then the cycle starts again. This circular movement of heat is called convection and is h ow heat is normally transferred in gases and liquids. Solids most frequently use a process called conduction but that is another story!
How are the pushed together and pulled apart?
Both continental and oceanic plates float on the top surface of the mantle, which is divided into convection cells. The movement of these convection cells drag the plates along: where convection causes the mantle material to fall the plates are pushed together and where convection causes the mantle material to rise the plates are pulled apart.
What is the difference between forced and natural convection?
Natural Convection occurs when a warmer less dense fluid is pushed away by a cooler denser fluid. Forced Convection occurs when an outside force pushes a fluid, such as water of air, to make it move and transfer heat. A fan is a perfect example. Im pretty sure air, and heat vents are examples too. An air conditioner is definitely an example.
When warm air is pushed up by cooler air closing in from both sides what kind of front result?
Occluded front
Which occurs during the afterbirth?
The placenta is pushed out of the uterus
How are different moutains tights formed?
Different mountains tights are formed when two slabs of the earth's crust smash into each other the land can be pushed upwards
How was peace made during world war 2?
The Russians pushed from the East. The Allies pushed from the North and South.
