Magnetism
How many poles does a magnet have, and what are they called?
2, north and south poles
Fill in the blank
A magnet can push or pull an object _____ touching it.
without
25 x 5
A negatively charged particle
Electron
A positively charged particle
Proton
What is attracted to a magnet?
Iron, cobalt, steel, and nickel
A grandmother, two mothers, and two daughters go to the zoo. How many tickets did they buy?
3
What is a flow of charged particles like electrons?
Electric current
A build up of negative particles on an object
Static electricity
state any one method to charge an insulator
friction
Where does the compass of a needle point?
To Earth's magnetic north pole
What is the needle of a compass made of?
It is a small magnet
which is the next number in the series
61,55,49,43,37,....
31
like charges......
repel
Name an example of static electricity in nature.
Lightning
find the next number
91,88,85,82,79
76
the area of magnetic force around a magnet
What is a magnetic field?
A device that produces electricity to provide power for electronic devices
A battery
difference between cell and battery
cell is 1, battery is more than 1
instrument used to measure current
ammeter
unit of electric current
ampere
Name 2 metals that are NOT attracted to magnets
copper, aluminum
direction of conventional current
positive to negative
What has to be broken before you can use it?
egg
Name 2 metals that are good conductors of electricity.
Copper, steel,