newtons 1st law objects resistance to a change in motion - objetcs in motion will remain in motion unless acted on by an unbalanced focre
newtons 1st law
100
friction
opposes motion
100
series circuit
has only one path for the current
100
is and incomplete path- does not allow current
open circuit
100
is the rate of change of velocity
acceleration
200
Fission
atoms split, energy is released
200
allow the passage of electrons easily. Ex: metals such as copper or silver or gold
conductors
200
law of conservation of charge
states that electric charge cannot be created or destroyed but can only be transferred from one object to another
200
atoms join, enegry is released
fusion
200
is equal for all objects regardless of mass
-9.8 m/s2 on earth
acceleration of gravity
300
newtons 2nd law
force=mass(acceleration) F=ma
300
electromagnetic enegry
enegry transferred in waves
300
lodestone and magnetite
objects that keep their mangetic properties for a long time are permanent mangets
natural magnets
300
converts chemical potential enegry into electrical enegry
generator
300
converting enegry into heat
thermal enegry
400
law relates voltage, current and resistance. Volts= current(resistance)
ohms law
400
parallel circuit
has more than one path for the current to flow
400
provide alternating current (AC) - the positive and negative poles switch. USA's power supply switches 60 times/sec. Measured in hertz. (60Hz)
generators
400
enegry of motion
KE= 1/2 (mass)(velocity2) more mass= more enegry more velocity = more enegry
kinetic enegry (KE)
400
contains two different electrodes in an electrolyte paste. ex: AA, C, D, 9v batteries
dry cell
500
converts chemical potential energy into kinetic enegry by burning a fuel, causing it ot heat and expand producing motion(KE).
Combustion engine
500
-attractive force between objects with mass (mass=amount of matter in an object)
-all objects have gravity
- the amount of gravity depends on the mass of theobjects and their distance apart
- causes weight which is measured in newtons
-decreases with distance ( weigh less the farther you are from the center of earth
force of gravity
500
difference is the force that pushes electrons. Measured in volts ( the enegry behind an electron)
voltage
500
stored in chemical bonds in substances like gasoline or food
chemical potenial
500
stationary objects ( gives ability to stand on a hill )