Which of the following causes wind?
Warm air, which weighs less than cold air, rises. Then cool air moves in and replaces the rising warm air. This movement of air is what makes the wind blow.
Where are winds weak?
Identify areas where winds are weak. The global winds are weak in the doldrums and horse latitudes, which are located in the Atlantic and Pacific oceans. The winds in these two regions are very calm.
What does a steep air pressure gradient cause?
Any change in pressure over distance is a pressure gradient. Air will try to move from areas of high pressure to areas of low pressure. The steeper the gradient (more rapid the change over distance) the greater the gradient force, which means the stronger the winds.
In which zone of prevailing winds is most of the United States situated?
westerliesThis answer is correct. Correct! Most of the U.S. is situated in the prevailing westerlies. Air moves from the southwest to thenortheast.
What is the Coriolis effect and why does it occur?
Because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect.
Which force generates wind?
Three forces are the cause behind the generation of the wind — pressure gradient force, friction force, and Coriolis force.
How do you calculate the force of wind?
Calculating Force Based on Wind Speed The mass of air hitting a surface then equals air density times area. The acceleration (a) equals the square of the wind speed in meters per second (m/s). Use the formula force (F) equals mass (m) times acceleration (a) to calculate the force in Newtons (N).
What is the relation between pressure and wind?
Wind results from a horizontal difference in air pressure and since the sun heats different parts of the Earth differently, causing pressure differences, the Sun is the driving force for most winds.
What type of relationship exists between wind speed and pressure?
Explanation: The more the pressure changes over a given distance, usually the faster the wind will be. This is called pressure gradient force. If there is a large pressure difference between two points that are far away, the wind speeds will be lower than if those locations are closer together.
What is the general wind?
Large scale winds caused by high- and low-pressure systems but generally influenced and modified in the lower atmosphere by terrain. see also: Local Winds; Slope Winds.
What type of relationship exists between time and pressure?
According to Boyle’s Law, an inverse relationship exists between pressure and volume. Boyle’s Law holds true only if the number of molecules (n) and the temperature (T) are both constant.
What is relationship between temperature and pressure?
The pressure of a given amount of gas is directly proportional to the temperature at a given volume. When the temperature of a system goes up, the pressure also goes up, and vice versa. The relationship between pressure and temperature of a gas is stated by the Gay-Lussac’s law.
What is r in PV nRT?
PV = nRT. The factor “R” in the ideal gas law equation is known as the “gas constant”. R = PV. nT. The pressure times the volume of a gas divided by the number of moles and temperature of the gas is always equal to a constant number.
Are pressure and volume directly related?
Key Concepts and Summary The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure (Charles’s law). The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle’s law).
What are the 6 gas laws?
Gas Laws: Boyle’s Law, Charle’s Law, Gay-Lussac’s Law, Avogadro’s Law.
Are pressure and volume inversely related?
More collisions mean more force, so the pressure will increase. When the volume decreases, the pressure increases. This shows that the pressure of a gas is inversely proportional to its volume.
What are the 3 laws of gas?
The gas laws consist of three primary laws: Charles’ Law, Boyle’s Law and Avogadro’s Law (all of which will later combine into the General Gas Equation and Ideal Gas Law).
What are the laws of gas?
Gas laws, laws that relate the pressure, volume, and temperature of a gas. Boyle’s law—named for Robert Boyle—states that, at constant temperature, the pressure P of a gas varies inversely with its volume V, or PV = k, where k is a constant.