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Air pressure.
At sea level it is approximately 760 mmHg.
I say approximately because air pressure naturally changes between high pressure areas(anticyclones) and low pressure areas (depressions/cyclones/hurricanes/typhoons).
NB 760 mmHg means that the air pressure will support a column of Mercury(Hg - hydragyrum) of approximate height 760 mm (millimetres) ( 0.76 metres).
Sometimes air pressure is measured in 'pounds per square inches' or 'pascals'.
What else can I help you with?
Is air pressure the weight of the atmosphere pressing down on earth?
Yes, air pressure is the weight of the atmosphere pressing down on Earth's surface due to the force of gravity pulling the air molecules towards the ground.
Which of these is an area of cool air pressing down on the earth?
A high-pressure system is an area of cool air that is pressing down on the earth's surface. This results in clear skies and stable weather conditions.
What three ways which wind erodes earth surface?
Abrasion: Wind carries particles such as sand and dust that can wear down surface materials by physically scraping them. Deflation: Wind removes loose, fine particles like sand and silt from the surface, causing erosion by lowering the land surface. Attrition: Wind-blown particles collide with each other and with surfaces, breaking down into smaller fragments and wearing away the land over time.
Is abrasion a type of erosion?
Yes, abrasion is a type of erosion that occurs when particles in water, wind, or ice wear down surfaces through friction. It typically involves the physical scraping or rubbing of materials against a surface, leading to the removal of particles or material from that surface.
Which of these does the atmosphere exert pressure on?
The atmosphere exerts pressure on all objects and surfaces within it, including buildings, people, and the Earth's surface. This pressure is a result of the weight of air molecules above pressing down on objects below.
Is air pressure the weight of the atmosphere pressing down on earth?
Yes, air pressure is the weight of the atmosphere pressing down on Earth's surface due to the force of gravity pulling the air molecules towards the ground.
Which of these is an area of cool air pressing down on the earth?
A high-pressure system is an area of cool air that is pressing down on the earth's surface. This results in clear skies and stable weather conditions.
Why would the pressure decrease from the core to the crust of Earth?
There is less weight pressing down from above as the distance toward the surface decreases.
Could decreasing the surface area increase the rate of a reaction?
No, decreasing the surface area typically decreases the rate of a reaction because there are fewer exposed particles available to react. This is because a smaller surface area reduces the frequency of collisions between the reacting particles.
Why do surface waves move in an up and down motion?
Surface waves move in an up-and-down motion due to the combined effects of gravity and inertia acting on the water particles. As a wave travels, water particles at the surface move in circular or elliptical orbits, creating the characteristic oscillation. This motion is influenced by the wave's energy pushing particles upward, while gravity pulls them back down, resulting in the visible rise and fall of the wave. Ultimately, this creates the undulating surface we observe as waves propagate across water.
Do you experience more pressure when you swim on the surface?
No. You experience greater and greater pressure as you swim farther and farther below the surface of the water. This is because there is a greater height of water pressing down on you from above.
What three ways which wind erodes earth surface?
Abrasion: Wind carries particles such as sand and dust that can wear down surface materials by physically scraping them. Deflation: Wind removes loose, fine particles like sand and silt from the surface, causing erosion by lowering the land surface. Attrition: Wind-blown particles collide with each other and with surfaces, breaking down into smaller fragments and wearing away the land over time.
What is the amount of force that air is placing on the earth called?
The force exerted by air on the Earth's surface is called atmospheric pressure. This pressure is caused by the weight of the air above pressing down on the Earth's surface.
What is the grinding down of a surface surface due to the friction caused by contact?
That is called abrasion, where the surface is worn down by repeated friction and rubbing from contact with another material. This process can lead to the removal of small particles from the surface, causing it to become smoother or change in shape over time.
What is a barometer used to measure?
the weight of the air pressing down on the earths surface is known as air pressure.this pressure is measured using a barometer
What is molecules closer to the surface that are more densely packed than those higher in the atmosphere because of gases pressing down from higher in the atmosphere?
Atmospheric pressure
What layer are cool particles pulled down by gravity?
Cool particles are typically pulled down by gravity at the troposphere layer. The troposphere is the lowest layer of the Earth's atmosphere where weather phenomena occur, and gravity causes particles to settle towards the Earth's surface within this layer.
