Magnetism
How many poles does a magnet have, and what are they called?
2, north and south poles
A magnet can push or pull an object _____ touching it.
without
Which word means to completely remove or get rid of?
Eliminate
A negatively charged particle
Electron
A positively charged particle
Proton
What is attracted to a magnet?
Iron, cobalt, steel, and nickel
What is the ability of an object to push or pull on another object that has a magnetic property?
Magnetism
What is a flow of charged particles like electrons?
Electric current
A build up of negative particles on an object
Static electricity
Who improved the design of the electric lightbulb so that it is cheaper and lasts longer?
Thomas Edison
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
Name an example of static electricity in nature.
Lightning
Why does the earth have a magnetic field?
Iron deep inside Earth creates a huge magnetic field around the planet.
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
This person will design electrical devices like cell phones, computers, and robots.
Electrical Engineers
How can you eliminate static charge?
Use a dryer sheet
What is an electromagnet?
A coil of wire around a metal bar (like an iron nail) that has an electric current running through it.
Name 4 metals that are NOT attracted to magnets
Gold, Silver, Aluminum, Zinc, Bronze, Copper
What is a good way to observe the shape of a magnetic field?
Name 2 metals that are good conductors of electricity.
Copper, steel, aluminum