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- 1. Multiple Choice
He discovered how electricity and magnetism are related in 1820.
Bejamin Franklin
Isaac Newton
Albert Einstein
Hans Christian Oersted
- 2. Multiple Choice
A compass needle is a ___
magnet
foriegn object
theory
satillite
- 3. Multiple Choice
Oersted tried a few experiments with the compass and the wire. He learned that ___
how the planets move in space
the gravitational pull starts at the atmostphere
electric current produced an electric current
how magnets get their shine
- 4. Multiple Choice
What scientist did more research with electricity and magnetism?
Isaac Newton
Andre-Marie Ampere
Charles Darwin
Carl Linnaeus
- 5. Multiple Choice
The interaction between electricity and magnetism is called __.
Electromagnetism
electrochemist
geophysics
biochemistry
- 6. Multiple Choice
True or False: The magnetic field produced by an electric current in a wire can move a compass needle
True
False
- 7. Multiple Choice
What 2 devices make the magnetic field stronger? These devices make electromagnetism more useful.
wires & movement
water & gravity
selonoid & electromagnet
battery & plug
- 8. Multiple Choice
A coil of wire that produces a magnetic field when an electric current runs through it is called a.
generator
transmission
cultivator
solenoid
- 9. Multiple Choice
The magnetic field of a solenoid gets stronger if it has
less loops of wire
more loops of wire
more heaps of sunshine
more batteries
- 10. Multiple Choice
What is the name of the train that use electromagnetism?
freight trains
maglev trains
locomotive trains
street car trains
- 11. Multiple Choice
Maglev is a short name for ____ ____
motor level
magic lyric
magnetic levitation
make a magnet
- 12. Multiple Choice
Electromagnets are very useful because we cannot turn them off.
true
false
- 13. Multiple Choice
An electromagnet can be turned off by NOT suppling electricity.
true
false
- 14. Multiple Choice
Electromagnetism makes the following device works
light on a doorbell
vending maching give change
fuel guage on a car
all of these
- 15. Multiple Choice
An electric motor is a device that changes electrical energy into mechanical energy.
true
false
- 16. Multiple Choice
A loop or coil of wire that can rotate on a electric motor is called.
armature
alternator
radiator
combustion
- 17. Multiple Choice
An electric motor that uses direct current contains a device called a___. It is a ring that is split in half and connected to the ends of the armature
Cummutator
Alternator
Radiator
Suspension
- 18. Multiple Choice
A galvanometer (gal-van-num-meet-ter) measures current or voltage.
true
false
- 19. Multiple Choice
What are two things that operate using electromagnetism?
gravitational pull
electric heator
cooking pan
maglev train & doorbell
- 20. Multiple Choice
An electric motor changes electrical energy into what kind of energy
machanical energy
thermal energy
nucluar energy
gravitational energy
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