What are the two main reasons air pressure changes?
Although the changes are usually too slow to observe directly, air pressure is almost always changing. This change in pressure is caused by changes in air density, and air density is related to temperature.
What are the two factors influencing the movement of air or wind?
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.
What are the factors affecting the velocity and direction of wind?
NCERT Notes: Forces Affecting Velocity And Direction Of Wind [Geography Notes For UPSC]
- The Pressure Gradient Force.
- The Frictional Force.
- The Coriolis Force.
What are the factors that influence the movement of wind?
Factors Affecting Wind Motion:
- 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 can influence local winds?
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.
When you describe the wind What two factors must be included?
Two factors are necessary to specify wind: speed and direction. What causes the wind to blow? As the sun warms the Earth’s surface, the atmosphere warms too.
Which statement best describes local winds?
Which statement best describes local winds? They move over short distances. What do the arrows indicate? Air moves in a direction that creates land breezes.
Why is a chinook wind both warm and dry?
Chinook winds develop when warm, moist air blows from the Pacific Ocean in the northwest region of North America toward the Rocky Mountain range, according to Rocky Mountain National Park. The air mass, now dry after releasing its moisture in the mountains, warms as it moves down the eastern side of the mountains.