Shared Flashcard Set

Details

physical science
oh shiz! yeah....
24
Science
9th Grade
06/07/2006

Additional Science Flashcards

 


 

Cards

Term
convection current
Definition
heat energy is transferred through liquids and gases by means of up-and-down movements
Term
machine
Definition
device that makes work easier by changing force and distance or by changing the direction of a force
Term
Potential energy
Definition
energy of shape or position; stored energy
Term
energy
Definition
ability to work
Term
insulator
Definition
material made up of atoms with tightly bound electrons that are unable to flow freely; substance that does not conduct heat easily
Term
conductor
Definition
material which permits electrons to flow freely or transfers heat more easily than other substances
Term
buoyant force
Definition
upward force in a fluid that exists because the pressure of a fluid varies with depth
Term
compound machine
Definition
combination of two or more simple machines
Term
hydralic device
Definition
machine that takes advantage of the fact that pressure is transmitted equally in all directions in a liquid; obtains a large force on a large piston by applying a small force with a small piston
Term
radiation
Definition
heat transfer through space
Term
thermometer
Definition
instrument used to measure temperature
Term
velocity
Definition
description of speed in a given direction
Term
convection
Definition
heat transfer in liquids and gases by means of convection currents
Term
frequency
Definition
number of waves that pass a certain point in a given amount of time
Term
wave
Definition
traveling disturbance that carries energy from one place to anther
Term
frame of reference
Definition
the background or object that is used for comparison
Term
pitch
Definition
property of sound that depends on frequency
Term
refraction
Definition
bending of waves due to a change in speed
Term
reflection
Definition
bouncing back of waves upon reaching another surface
Term
speed
Definition
rate at which an object moves
Term
wavelength
Definition
distance between two consecutive similar points on a wave
Term
deceleration
Definition
decrease in velocity, the value of acceleration is negative
Term
conduction
Definition
heat transfer through a substance or from one substance to another by direct contact of molecules; method of charging an object by allowing electrons to flow through one object to another object
Term
Archimedes' principal
Definition
explanation that says that the buoyant force on an object is equal to the weight of the fluid displaced by the object
Supporting users have an ad free experience!