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15 Cards in this Set
- Front
- Back
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What is matter? |
Anything that occupies space and has weight |
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What are the three states of matter? |
Solids, liquids, and gases |
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What is the standard atmospheric pressure at sea level? |
It is considered to be 14.7 psi or 29.92 inches of Hg. |
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What is the name of the atmospheric phenomenon where cool air is trapped near the earth by warm air? |
A temperature inversion. (Not in the book for some reason) |
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What is the speed of sound through the air under standard sea level conditions? |
It is 662 knots and 761 mph |
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What determines the density of the air (density altitude)? |
The temperature and pressure acting upon it |
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What are the three basic parts of a lever? |
The fulcrum, force of effort, and resistance |
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What is a first-class lever, and give an example. |
A first-class lever is when the fulcrum is located between the effort and the resistance. An example of a first-class level is a seesaw. |
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In what direction is force transmitted in a confined fluid? |
Force is transmitted equally in all directions. |
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What is the formula for computing force, pressure, and area? |
Force equals pressure times area or F = P x A |
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What is absolute zero? |
It is the temperature at which all motion of the molecules will cease entirely in a given sample of gas. It is considered to be -273° C. |
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What are the two factors involved in work? |
Force and movement through a measurable distance |
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How is pressure expressed in hydraulics and pneumatics? |
It is expressed in pounds per square inch (psi). |
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What are three methods of heat transfer? |
Conduction, convection, and radiation |
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What are the three types of friction? |
Rolling, sliding, and static |
