Karteikarten
Physical science
Karten in diesem Stapel (47)
- 1altimetera device use to measure altitude
- 2adhesionattraction to molecules of a different substance
- 3capillaritythe phenomenon in which liquids in thin tubes rise above or fall beneath their own levels
- 4plasticitythe maximum amount of permanent deformation to which a material may be subjected without breaking
- 5elasticitythe ability of a solid to recover its shape after being deformed
- 6bendinga combination of stretching and compression
- 7kinetic theory of matterused to explain the existence of different states of matter and the behavior of them
- 8atomic theory of matterthe basis for the scientific understanding of all matter
- 9crystalline solidsthose whose molecules or atoms are arranged in a well-ordered pattern
- 10diffusionthe process of mixing molecules of one substance with another substance by random molecular motion
- 11brownian motionthe result of collisions between the microscopic solid particles and molecules of a fluid
- 12semipermeable solidallow some substances to diffuse through them but not other substances
- 13pascal's principleif pressure is applied to a fluid inside a closed container the pressure increased will be distributed equally throughout the container
- 14buoyancythe tendency for a solid placed in the water to float
- 15hydrofoilan airfoil-like structure designed for use in water instead of air
- 16rigidityhow strongly a material opposes deformation
- 17torsiona shear in a circle or twisting
- 18osmosisdiffusion through a semipermeable membrane
- 19liquidtends to adhere more strongly to other matter than solids do
- 20compressibilitythe ability to be easily squeezed and compacted into smaller containers
- 21siphona simple device used to move liquids over obstacles without pumps
- 22amorphous solidsthey do not have specific melting points but instead soften over a range of temperatures
- 23mohs scaleused frequently by mineralogists for identification of minerals ranks minerals in order of their ability to be scratched
- 24submarinea vessel that can float on top of the water or maneuver beneath the surface by changing its buoyancy
- 25atomsextremely small particles that make up matter
- 26streamliningthe science of shaping objects to allow the smooth flow of fluids around them and reduce drag
- 27meniscusa curved surface where water meets the glass
- 28neutral buoyancywhen a submarine is completely underwater but not sinking
- 29torricellihe proposed that air has weight and is often credited as the discoverer of air pressure
- 30amonton's lawtemperature and pressure are directly related when volume is held constant
- 31atchimede's principlethe buoyant force experienced by an object is exactly equal to the weight of the fluid displaced
- 32bernoulli's principledepends only on the relative motion between the fluid and an object
- 33boyle's lawchange in volume changes the frequency of collisions
- 34hooke's lawthe amount of force needed to produce a particular amount of deformation
- 35pascal's principalif pressure is applied to a fluid inside a closed container the pressure increased will be distributed equally throughout the container
- 36aileronlocated at the end of the Wings till the plane from side to side to adjust roll
- 37airfoila structure that changes the flow of air to produce a force
- 38dragthe force that tends to slow an object moving through a fluid
- 39elevatorcontrols in airplane's pitch
- 40flapincreases wing area to produce more lift
- 41liftit is an upward force. the lift must be greater than the weight of the plane
- 42pitchforce that propels a plane foward
- 43rolladjusted when a plane moves side to side
- 44thrusta force that propels a plane foward through the air allowing wings to produce lift
- 45weighta downward force of gravity on a plane
- 46yawangle left or right
- 47essayBernoulli'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.