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Warm air has higher air pressure than cold air because the molecules are expanding?
Wiki User
∙ 6y ago
False
Wiki User
∙ 6y ago
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Is there more pressure in the Sahara desert or at the top of Mount Everest?
There is more atmospheric pressure in the Sahara Desert. The number of air molecules around us decrease as we go higher into the atmosphere, which also causes the air pressure to decrease. Since the Sahara Desert is closer to sea level than Mount Everest is, there are more air molecules and more pressure there.
Does the pulmonary artery have higher pressure than the pulmonary veins?
yes. because it pumps blood to the lungs.
Why do arteries have thicker walls then veins?
Because arteries are narrower, thus increasing the pressure in the arteries. So you need thicker walls to contain the blood under pressure.
Why is the artery thicker than a vein?
the artery walls must be thick to withold the pressure of the blood coming right from the heart. veins don't need that thick of walls because there is not as much pressure farther away from where the heart is located
Is blood pressure the pressure of blood in the arteries?
Yes, blood pressure is a measure of the pressure exerted on your arterial walls as the heart pumps blood throughout the body (systolic) over the pressure when your heart is relaxed (diastolic).
If the air pressure gets higher does it mean that there are more molecules pressing down?
quite right. Air pressure is the result of millions of air molecules impinging on the surface per unit area. The higher the air pressure, the higher the number of strikes from air molecules.
What causes has pressure?
The answer depends on what kind of pressure. If you mean the pressure exerted by gasses on the walls of a container (a balloon, for example), pressure is created by the motion of the molecules of gas. Temperature and density of the molecules are factors. Higher density results in higher pressure. Higher temperature creates more molecular motion, thereby creating higher pressure.
What is the relationship between the temperature and the pressure of gas?
If the temperature is low, then the molecules of the gas have less kinetic energy and thus it has low pressure. If the temperature is higher, then the molecules have more energy and thus the gas has higher pressure
Is the pressure decrease or increase with altitude?
Pressure is due to the number of molecules hitting you or your instrument. As you go up in altitude, there are less molecules hitting you, i.e., the pressure decreases. The higher you go, you are getting thinner atmosphere, which means there are less molecules available, so the pressure is lower. Air molecules are more abundant closer to the surface, and therefore the molecules are closer together, i.e. higher pressure.
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
Air pressure is affected by temperature.?
Yes, air pressure is affected by temperature.When the temperature is higher the air pressure lowers and the weight of the air is lower. When air is warmer the molecules sperate and there are less molecules that can cause pressure.
Why is it harder to breathe as you climb higher while hiking in the mountains?
As you climb higher the less oxygen you because higher altitudes and because atmospheric pressure is lower, the air molecules and hence the O2 is less concentrated per unit volume.
Why does air pressure becomes lower as water molecules are added to the air?
Air pressure is the weight of the air at a specific location. On the surface of the earth, we have the entire weight of the atmosphere pressing on us in the form of air molecules like O2, N2, and CO2. As we go higher and higher into the atmosphere, there are fewer molecules and so there is less weight pressing against us.
Does high pressure have high density?
If you are referring to a high pressure gas, then yes. The higher the pressure, the higher the density of the gas because the molecules pack closer together. The density of liquids can also be affected by pressure but to much less of an extent. For most purposes, liquids such as water are considered incompressible.
Why does the boiling temperature of water decrease when the water is under reduced pressure such as it is in a higher altitude?
Reduced pressure lessens the squeezing of molecules, which favors their tendency to separate and form vapor.
What are Molecules closer to the surface are more densely packed than those higher in the atmosphere because of the mass of gases pressing down from higher in the atmosphere?
Im pretty sure its atmospheric pressure
What are 3 factors affect air pressure?
The factors are: -The volume that the air takes up (the greater the volume the less the pressure) -The amount/number of molecules of air (the more gas the higher the pressure) -The temperature (the higher the temperature the higher the pressure) and that's it lol
