- Temperature. Air temperature varies between day and night and from season to season due to changes in the heating Earth’s atmosphere. ...
- Air Pressure. ...
- Centripetal Acceleration. ...
- Earth’s Rotation.
What are the factors influencing the speed and direction of wind?
The main factors that affect wind direction and speed are: the pressure-gradient force, the Coriolis force and friction . These factors working together cause the wind to blow in different directions and at different speeds.
What are factors influencing wind?
- Pressure Gradient Force:
- Coriolis Force:
- Centripetal Acceleration:
- Frictional Force:
- Primary or Prevailing Winds:
- Secondary or Periodic Winds:
- Tertiary or Local Winds:
What are the 3 factors that affect wind?
The speed and direction of the wind is governed by three forces; the pressure gradient force (PGF), the Coriolis Force and friction .
Which has the greatest influence on wind speed?
Air pressure has the greatest effect on wind speed.
What are the factors affecting the movement of air?
There are 5 major factors affecting global air circulation : – uneven heating of earth’s surface, seasonal changes in temperature and precipitation , rotating of earth on its axis, properties of air and water and long term variation in the amount of solar energy striking the earth.
Does wind comes from a single direction?
Prevailing winds are winds that blow from a single direction over a specific area of the Earth. ... This happens because Earth’s rotation generates what is known as the Coriolis effect. The Coriolis effect makes wind systems twist counter-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
Which two factors affect the wind and pressure system?
- latitudes:At the higher latitudes the pressure is high and the air settle down. ...
- Temperature:When the temperature is high there will be low pressure and the air rises and when the temperature is low there will be low pressure and air settle down.
What is wind speed monitoring?
Wind vanes measure wind direction and are often used with anemometers , which measure wind speed. Campbell Scientific offers a variety of anemometer designs: cup, propeller, ultrasonic, sonic, and lidar.
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).
Why is wind speed important?
Wind speed and direction are important for monitoring and predicting weather patterns and global climate . Wind speed and direction have numerous impacts on surface water. These parameters affect rates of evaporation, mixing of surface waters, and the development of seiches and storm surges.
What is the effect of temperature on wind?
Conclusion. Temperature differences between air masses lead to pressure differences , and this produces wind. The winter brings higher temperature gradients, especially when cold fronts move in from polar regions, and this causes wind speeds that are higher than normal.
What were the two factors that cause differences in wind speed?
Air Pressure
At the Earth’s surface, wind blows horizontally from high pressure to low pressure areas. The speed is determined by the rate of air pressure change , or gradient, between the two pressure areas. The greater the pressure difference, the faster the winds.
What are the factors that affects the movement of these things?
Objects change their motion because unbalanced forces act on them. There are four main factors that affect the motion of objects. These factors are force, friction, inertia, and momentum .
What are the factors affecting the movement of air Class 9?
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.
How does temperature affect the movement of air?
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.
