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Fluids
| Question | Answer |
|---|---|
| defined as the force per unit of area | pressure |
| force is measured in | newtons |
| the weight of the air pushing down on itself and on Earth's surface | atmospheric pressure |
| average pressure exerted by the atmosphere at sea level | 100 kPa |
| fluids in a closed system | confined fluid |
| blood moving through your body is a | confined fluid |
| confined pressurized system that uses moving liquids | hydraulic system |
| a confined, pressurized system that uses moving air or other gases such as carbon dioxide | pneumatic |
| the force to be transmitted from one particle to another, that volume that the gas occupies must be reduced | compression |
| the state where particles are far apart | gas |
| gases can be easily reduced into | volume or compressible |
| the human body is this percent of water | 66 |
| most efficient natural hydraulic system | human circulatory system |
| transports blood through the body | human circulatory system |
| pipelines that carry the blood to all parts of the body | blood vessels |
| force of the blood on the walls of the blood vessels | blood pressure |
| measures blood pressure by applying enough pressure to an artery in your arm to briefly stop by the flow of blood | sphygmomanometer |
| blood vessels that carry oxygenated blood away from your heart | arteries |
| largest artery in your body | aorta |
| smallest arteries | arterioles |
| network of tiny blood vessels that act like a highway interchange | capillaries |