Atmospheric pressure
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Atmospheric pressure is the force exerted by the weight of air in the atmosphere. It affects objects in several ways: by applying a force to still or moving objects which can change their direction or shape; by soaking objects placed vertically in mud more than horizontally due to differences in surface area; and by being measured as pressure, which is force per unit area. Atmospheric pressure decreases with increasing altitude and changes over time and location, resulting in winds like sea breezes and land breezes.
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Atmospheric pressure
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- 2. Force applied movesthe still object Atmospheric Pressure
- 3. Moving Object standsstill Atmospheric Pressure
- 4. Object in motionchanges it’s direction Atmospheric Pressure
- 5. Object changes it’sshape Atmospheric Pressure
- 6. Effect produced dueto force is more when the surface area is smaller and less when the surface area is larger. One edge of drawing pin is flat while another is sharp It is easier to cut with sharp knife rather than blunt one. Vertically placed brick soaks more in mud then horizontally placed Atmospheric Pressure
- 7. Force exerted onsurface area on one unit is called Pressure. Pascal is the unit of Pressure. Pressure = ------- Force Area Standstill Liquid and Gas exerts pressure Pressure exerted on earth because of atmosphere is called Atmospheric Pressure Atmospheric Pressure
- 8. Effects of atmosphericpressure Atmospheric Pressure
- 9. At sea levelthe atmospheric pressure is more As we go higher the pressure decreases. It becomes difficult to breathe as we climb higher. Atmospheric Pressure Sea Breeze
- 10. Atmospheric pressure Atmospheric Pressurechanges according to time and place.. Due to this difference in pressure, wind blows. Land Breeze