Physical science

Frage	Antworten
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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	Erstellt von Allysa Parkhill vor etwa 6 Jahre