Physics 1

Created by

Rose

Cards (64)

What is kinetic store
Energy stored by an objects movement
What is gravitational potential store 
Energy stored in objects raised above the earth
What is chemical store 
Energy stored in chemical bonds between atoms
What is elastic potential store 
Energy stored when an object is stretched or compressed
What is nuclear store 
Energy stored in the nucleus of an atom which can be released by radioactive decay
What is internal store
Sum of kinetic and potential energy
Energy change equation 
Ek = 1/2 mv^2
Change in gravitational potential energy =  
Mass x gravitational field strength x change in height
Elastic potential energy = 
1/2 x spring constant x extension^2
What is electrical work 
Transferring energy from one place to another
Where does heat transfer to
Internal store
Where does mechanical work transfer to  
One object to another
Where do waves transfer energy to 
One object to another
What is power 
Energy transferred when work is done
equation for power 
Power = work done/time taken
What is work done measured in
Joules
What is time measured in
Seconds
What is efficiency  
How good a device is at transferring energy input to useful energy output
What are wires in a circuit diagram
Straight line
What is a switch on a diagram
Closed - straight line with circles
Open - crocodile looking
What does a thermistor look like
Rectangle with angled line going through
What does a lamp look like
Circle with a cross
What does an ammeter look like
Circle with an A
What does a voltmeter look like
Circle with a V
What does a fixed resistor look like
rectangle
What does a variable resistor look like
A triangle with an angled arrow
What does a diode do
Only allows electrical flow in one direction
What do rectifiers do
Changes alternating current into a direct current
What does a thermistor do
Resistance changes with temperature
What does an LDR do
Resistance decreases with light intensity
What is voltage like in a series circuit
Varies across components
What is the current like in a series circuit  
The same eveywhere
What is resistance measured in 
Ohms
Current through battery is larger than what in a parallel circuit  
Current of individual branches sum
total current through energy =  
Sum of current in branches
Bulbs are in what
Parallel
What can current be affected by
Potential difference and resistance
What is resistance 
How hard it is for current to flow
Longer the wire the…
higher the resistance
Ohms law 
Potential difference = current x resistance