False
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.
yes. because it pumps blood to the lungs.
Because arteries are narrower, thus increasing the pressure in the arteries. So you need thicker walls to contain the blood under pressure.
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
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).
Pressure decreases with altitude because as you go higher in the atmosphere, there are fewer air molecules above you exerting pressure downwards. This results in lower atmospheric pressure at higher altitudes.
Reducing the air pressure allows the molecules to escape
Pressure is higher when molecules move faster because they collide with the walls of the container more frequently and with greater force. Slower-moving molecules result in lower pressure as they collide less frequently and with less force.
The higher you are in the atmosphere, the lower the air pressure. Seeing that the top of a mountain is quite high, the air pressure is low; the air is thinner. This is why you need oxygen tanks to reach the top of Mount Everest
At sea level, air pressure is greater compared to higher altitudes. This is because there is more atmosphere above pressing down on air molecules, creating higher pressure. As you ascend in altitude, the air pressure decreases due to the lower concentration of air molecules above.
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.
Vapor pressure and boiling point are related because they both involve the escape of molecules from a liquid into the gas phase. As vapor pressure increases, so does the boiling point. This is because a higher vapor pressure means more molecules are escaping the liquid, which requires more energy and thus a higher temperature to maintain the liquid state.
Yes, molecules closer to the surface experience higher pressure due to the weight of the air above them, making them more densely packed. As you move higher in the atmosphere, there are fewer molecules above exerting pressure, resulting in lower density.
Atmospheric pressure
As altitude increases, air pressure decreases. This is because there are fewer air molecules in the atmosphere at higher altitudes, leading to lower pressure.
As distance from Earth increases, the atmospheric pressure decreases. This is because there are fewer air molecules present at higher altitudes, leading to lower pressure.
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