15136413
Description
Flashcards by Allysa Parkhill, updated more than 1 year ago
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Created by Allysa Parkhill
about 6 years ago
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| Question | Answer |
| altimeter | a device use to measure altitude |
| adhesion | attraction to molecules of a different substance |
| capillarity | the phenomenon in which liquids in thin tubes rise above or fall beneath their own levels |
| plasticity | the maximum amount of permanent deformation to which a material may be subjected without breaking |
| elasticity | the ability of a solid to recover its shape after being deformed |
| bending | a combination of stretching and compression |
| kinetic theory of matter | used to explain the existence of different states of matter and the behavior of them |
| atomic theory of matter | the basis for the scientific understanding of all matter |
| crystalline solids | those whose molecules or atoms are arranged in a well-ordered pattern |
| diffusion | the process of mixing molecules of one substance with another substance by random molecular motion |
| brownian motion | the result of collisions between the microscopic solid particles and molecules of a fluid |
| semipermeable solid | allow some substances to diffuse through them but not other substances |
| pascal's principle | if pressure is applied to a fluid inside a closed container the pressure increased will be distributed equally throughout the container |
| buoyancy | the tendency for a solid placed in the water to float |
| hydrofoil | an airfoil-like structure designed for use in water instead of air |
| rigidity | how strongly a material opposes deformation |
| torsion | a shear in a circle or twisting |
| osmosis | diffusion through a semipermeable membrane |
| liquid | tends to adhere more strongly to other matter than solids do |
| compressibility | the ability to be easily squeezed and compacted into smaller containers |
| siphon | a simple device used to move liquids over obstacles without pumps |
| amorphous solids | they do not have specific melting points but instead soften over a range of temperatures |
| mohs scale | used frequently by mineralogists for identification of minerals ranks minerals in order of their ability to be scratched |
| submarine | a vessel that can float on top of the water or maneuver beneath the surface by changing its buoyancy |
| atoms | extremely small particles that make up matter |
| streamlining | the science of shaping objects to allow the smooth flow of fluids around them and reduce drag |
| meniscus | a curved surface where water meets the glass |
| neutral buoyancy | when a submarine is completely underwater but not sinking |
| torricelli | he proposed that air has weight and is often credited as the discoverer of air pressure |
| amonton's law | temperature and pressure are directly related when volume is held constant |
| atchimede's principle | the buoyant force experienced by an object is exactly equal to the weight of the fluid displaced |
| bernoulli's principle | depends only on the relative motion between the fluid and an object |
| boyle's law | change in volume changes the frequency of collisions |
| hooke's law | the amount of force needed to produce a particular amount of deformation |
| pascal's principal | if pressure is applied to a fluid inside a closed container the pressure increased will be distributed equally throughout the container |
| aileron | located at the end of the Wings till the plane from side to side to adjust roll |
| airfoil | a structure that changes the flow of air to produce a force |
| drag | the force that tends to slow an object moving through a fluid |
| elevator | controls in airplane's pitch |
| flap | increases wing area to produce more lift |
| lift | it is an upward force. the lift must be greater than the weight of the plane |
| pitch | force that propels a plane foward |
| roll | adjusted when a plane moves side to side |
| thrust | a force that propels a plane foward through the air allowing wings to produce lift |
| weight | a downward force of gravity on a plane |
| yaw | angle left or right |
| essay | Bernoulli's principle requires the faster are on top to exert less pressure upon the wing than the slower are below. the resulting difference in pressure between the top and bottom of the wing pushes the wing up toward the lower pressure. this upward force is lift. lift wouldn't be possible unless the plane moves first. the force that causes a plane to move forward allowing wings to produce lift is thrust. therefore without thrust there would be no lift for Bernoulli's principle to apply to. |
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