Vocabulary
What is a magnet?
What is an object that exerts an invisible force called magnetic force?
An electromagnet is wire ____ or wrapped around a bar of iron or other magnetic material.
What is coiled?
A non-invasive medical imaging technique that uses radio waves and a powerful magnet to create detailed pictures of the inside of the body.
What is MRI or Magnetic Resonance Imaging?
As electrons move, they make
A. electromagnets
B. ferromagnets
c. Magnetic fields
D.pulsars
C. Magnetic fields
what happens to the electromagnet if you add more coils?
What is increasing the strength?
what is an electromagnet?
What is a wire wrapped around a bar made of ferromagnetic material called a solenoid?
The coiled wire allows___ current to flow into the iron bar magnetizing.
What is electric?
A device that turns electrical energy into motion, usually rotation.
What is an electric motor?
Which of these items is not needed to build an electromagnet?
A. a magnet
B. wire
C. A battery
D. nail
A. A magnet
what happens to the electromagnet if you remove coils?
What is a decrease in the strength?
What is a solenoid?
What is a ferromagnet material with an electric current flowing through it?
That bar now has a ______ with north and south magnetic poles.
What is magnetic field?
A machine that converts one form of energy into another, especially mechanical energy into electrical energy.
What is generators?
Which is an example of a solenoid in an electromagnet?
A. a nail
B. A wire
C. A battery
D. All of the above
A. a nail
What happens if you use a stronger battery?
What is increases the strength of the magnet?
What is an electric current?
What is when electric charges flow from one place to another in a circuit?
Any device that has an electric motor contains _____.
What is electromagnets?
A crane has a large iron disc that is not a permanent magnet. The crane operator lowers the electromagnet into a pile of scrap steel and then switches on the electricity Scrap steel is attracted to the disc.
What is junkyard crane?
A compass needle responds to a magnetic field because the compass needle is a?
A. motor
B. transformer
C. generator
D. magnet
D. magnet
Where is the magnet the strongest?
What is the poles?
What is a magnetic force?
What is the attraction or repulsion between electrically charged particles because of their motion?
_______ are devices that use electromagnets to convert electrical energy to ______.
1. Electric motors
2. Kinetic energy
Convert electrical signals into sound waves through a process called electromagnetic induction.
What is headphones?
The magnetic field around a wire forms a
A. triangle
B. square
C. circle
D. circle or triangle
C. circle
Final Jeopardy Question!!!
What is the most magnetic object?
What is neodymium?