Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Physics definitions

all the definitions from grade 9 physics

volcanic cell a source of energy that generates an electric current by chemical reactions involving two different metals or metal compounds separated by a conducting solutiuon
battery a connection of two or more cells
electrode one of two metal terminals in a cell or battery
electrolyte a solution or paste that conducts charge
friction a process in which objects made from different materials rub against each other, producing a net static charge on each
direct current current in which charged particles travel through a circuit in only one direction
insulator a material in which electrons cannot move easily from one atom to another
secondary cell a cell that can be recharged
primary cell a cell that can be used only once
wet cell a cell that contains a liquid electrolyte
dry cell a cell that contains an electrolyte made of paste
conductor a material in which electrons can move easily between atoms
contact generating a net charge on a neutral object by touching it with a charged object
solar cell a cell that converts sunlight into electrical energy
terminal a position on a cell that must be connected to other components to form a circuit
switch a control device that can complete or break the circuit to which it is connected.
open circuit a circuit that contains a gap or break
closed circuit a circuit that is complete with no breaks or gaps
semiconductor a material in which electrons can move fairly well between atoms
coulomb the quantity of charge that is equal to the charge of 6.25 x 10(18) electrons
ampere the unit of electric current, equivalent to one coulomb per second
resistor a device used in an electric circuit to decrease the current through a component by a specific amount.
load a resistor or any other device that transforms electrical energy into heat, motion, light or sound.
ground an object that can supply a very large number of electrons to, or can remove a very large number of electrons from, a charged object, thus neutralizing the object
electroscope a device for detecting the presence of an electric charge
alternating current a current in which electrons move back and forth in a circuit
potential difference the difference between the electric potential energy per unit of charge at two points in a circuit.
volt the unit for potential difference; equivalent to one joule (J) per second
series circuit a circuit in which there is only one path along which electrons can flow
parallel circuit a circuit in which there is more than one path along which electrons can flow
Ohm's law the ratio of potential difference to current is a constant called resistance.
lightning rod a metal sphere or point that is attached to the highest part of a building and connected to the ground
static electricity an electric charge that tends to stay on the surface of an object, rather than flowing away quickly
Created by: caitlynkummer