a measure of how quickly the velocity of something is changing, it can be positive or negative
1 of 32
amphere
the unit for measuring current. 1 amp is a flow of 1 coulomb of charge per second
2 of 32
becquerel (Bq)
the units for the activity of a radioactive object. one Bq is one radioactive decay per second
3 of 32
coulomb
the unit for measuring charge
4 of 32
count rate
the number of alpha or beta particles, or gamma rays detected by a weigher muller tube
5 of 32
diode
a component that lets electric current flow through in only one direction
6 of 32
displacement
the distance travelled in a particular direction; displacement is a vector
7 of 32
force
an interaction on an object that can cause it to accelerate
8 of 32
gravitational field strength
a measure of how strong the force of gravity is somewhere
9 of 32
half-life
the average time taken for half of the radioactive nuclei in the original sample to decay
10 of 32
induction
when an object is charged by another charged object placed close to it
11 of 32
ionising radiation
form of radiation that causes ionisation in atoms of the material it passes through, the atoms lose or gain electrons and become charged-they become ions
12 of 32
mass
a measure of the amount of material that there is in an object
13 of 32
momentum
the quantity of motion of a moving body, calculated by mass x velocity
14 of 32
nuclear fission
the reaction when the nucleai of a large atom such as uranium, splits into two smaller nuclei
15 of 32
nuclear fusion
the reaction when the nuclei of light atoms, e.g. hydrogen, combine to make the nucleas of a heavier atom
16 of 32
ohm
unit for measuring resistance
17 of 32
potential difference
another word for voltage. it is the difference in the energy carried by electrons, before and after they have flowed through a component
18 of 32
radioactive decay
when an unstable nucleas changes by giving out ionising radiation to become more stable
19 of 32
relative charge
the electrical charge of a subatomic compared to the electrical charge of a proton
20 of 32
resistance
how easy or difficult it is for an electric current to flow through something
21 of 32
resultant force
the total force that results from two or more forces acting upon a single object. calculated by adding together the forced, taking into account the directions
22 of 32
speed
a measure of the distance an object travels in a given time, usually measured in m/s
23 of 32
terminal velocity
a constant, maximum velocity reached by objects falling, this happens when the weight downwards is equal to the air resistance upwards
24 of 32
thermistor
a component who resistance gets smaller when it gets hotter
25 of 32
vector
a quantity that has a magnitude (size) and direction e.g. force and velocity
26 of 32
velocity
the speed of an object in a particular direction (usually measure in m/s)
27 of 32
voltmeter
instrument for measuring the potential difference across a component
28 of 32
weight
the force pulling an object downwards, the weight depends upon the mass on an object and the gravitational field strength
29 of 32
work
transfer of energy
30 of 32
charge
the amount of electricity travelling through a circuit
31 of 32
force
a push or pull upon an object resulting from the object's interaction with another object.
32 of 32
Other cards in this set
Card 2
Front
amphere
Back
the unit for measuring current. 1 amp is a flow of 1 coulomb of charge per second
Comments
No comments have yet been made