As air tries to move from high to low pressure in the atmosphere, the Coriolis force diverts the air so that it follows the pressure contours. In the Northern Hemisphere, this means that air is blown around low pressure in an anticlockwise direction and around high pressure in a clockwise direction.

What are the factors that cause winds in the Northern Hemisphere to blow inwards and counter- clockwise around lows? The pressure, gradient, coriolis effect.

A major factor that determines wind direction is air pressure. Wind travels from areas of high pressure to areas of low pressure. Additionally, heat and pressure cause the wind to shift direction.

The speed and direction of the wind is governed by three forces; the pressure gradient force (PGF), the Coriolis Force and friction. PGF is the force produced by differences in barometric pressure between two locations and is responsible for the flow of air from an area of high pressure to an area of low pressure.

Answer. Three of the major factors that affect wind are pressure gradients, the rotation of the planet, and friction. Wind is ultimately caused by atmospheric pressure gradients.

The movement of air is mainly caused by the differences in pressure and temperature. Warm air is lighter and it rises upwards, meanwhile, cold air is denser and hence it moves down to replace the warm air. This phenomenon creates wind.

There are four main factors that affect the motion of objects. These factors are force, friction, inertia, and momentum.

How does the temperature of air affect air density? Heating of the earth, which in turn heats the atmosphere, is responsible for the motions and movements of the air in the atmosphere. The faster molecules move, the hotter the air. As the molecules heat and move faster, they are moving apart.

The motion of the particles is increased by raising the temperature. Conversely, the motion of the particles is reduced by lowering the temperature, until, at the absolute zero (0 K), the motion of the particles ceases altogether. Because the particles are in motion, they will have kinetic energy.

The temperature of the air gets COLDER as you go higher above the earth. Changes in temperature cause changes in air pressure. COLD AIR SINKS toward the earth because it is HEAVIER than warm air.It PUSHES DOWN HARDER than warm air, so a cold air mass is called a HIGH-PRESSURE AREA.

If the earth’s surface in a region is heated up by the strong sun, the air over it becomes lighter and rises up. The heated air that rises up gets cooled and sinks. This causes convection currents to be set up in the air.

As air warms up, the molecules start to vibrate and bump into each other, increasing the space around each molecule. Because each molecule uses more space for motion, the air expands and becomes less dense (lighter). The amount of space the air takes up shrinks, or reduces the air pressure.

Temperature refers to how warm or cold air is, and the density of the air is how many molecules are packed into a certain space of air. Air pressure is influenced by temperature because, as the air is warmed, the molecules start moving around more, so they bump into each other more often and create more pressure.

Hot air is lighter than cold air. The reason fr this is when air gets heated up it expands and becomes less dense than the air surrounding it also the distance between the molecules increases. So the less dense air floats in the much denser air just like ice floats on water as ice is less dense than water.

Cold air is always heavier than an equal volume of hot air. “Air” is actually a mixture of several gases. By volume, dry air contains 78.09 percent nitrogen, 20.95 percent oxygen, 0.93 percent argon, 0.039 percent carbon dioxide and small amounts of other gases.

Warm air is lighter than cold air because they have more heat energy, which results in the increase in distances between the molecules. This decraeses the density, and hence makes it lighter than cold air.

Warm air is less dense than cold air. pressure. and are spread farther apart. Therefore there are fewer air molecules in a given area to push down on you.

Cold air sinks. Sinking air compresses and heats. As air sinks, air pressure at the surface is raised. Cold air holds less moisture than warm.

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Cold air is more dense, therefore it has a higher pressure. Warm air is less dense and has a lower pressure associated with it.

The pressure is always higher at the equator than at the poles. At any give local, if one spot is heated more than the areas around it that air can expand. In this case the volume of the air increases with temperature and therefore the pressure decreases.

Low-pressure systems are associated with clouds and precipitation that minimize temperature changes throughout the day, whereas high-pressure systems normally associate with dry weather and mostly clear skies with larger diurnal temperature changes due to greater radiation at night and greater sunshine during the day.

Well, high pressure is associated with sinking air, and low pressure is associated with rising air. Air is moving away from the high pressure center at the surface (or “diverging”) so as a result, air from above must sink to take its place.

When the pressure is low, the air is free to rise into the atmosphere where it cools and condenses. Without low pressure, much of the air and the water vapor within it wouldn’t reach a high enough altitude to condense, so it wouldn’t rain. This is why when you see areas of low pressure, rain often follows.

A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.

Low pressure is what causes active weather. The air is lighter than the surrounding air masses so it rises, causing an unstable environment. Rising air makes the water vapor in the air condense and form clouds and rain for example. Low pressure systems lead to active weather like wind and rain, and also severe weather.

As a general rule of thumb, lows have a pressure of around 1,000 millibars (29.54 inches of mercury). Here is how these low-pressure systems form and how they affect the weather.