Electricity and Magnetism
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Transcript of Electricity and Magnetism
Electricity and MagnetismOpposites
AttractMagnetic
PersonalitiesIt’s
ElectricCircuit
CitySuprises?
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FJ
Column 1, #1
Answer: B - a paperclip is correct!
a) b)
c) d)
Which object will be attracted to a magnet?
Magnetic Personalities
Answer: D - inside of a mini-van.
Out of the following choices, which is the safest place to be during a lightening storm?
a) In a lake.
b) In an open field.
c) Under a apple tree.
d) Inside of a mini-van.
Surprises
It’s Electric
Answer: C - static electricity
An object with a buildup of electric charges on its surface is charged with _________.
a) Solar power
b) Electromagnetism
c) Static electricity
d) Electric discharge
Suprises
What is the long, thin wire coiled in an incandescent bulb called?
a) A fixture
b) Mercury and argon vapor
c) A switch
d) A filamentAnswer: D - a filament
Magnetic Personalities
Answer: B - magnetic field
The space in which the force of a magnet can act is called its ________.
a) Electromagnetism
b) Magnetic field
c) Electric charge
d) Magnetic charge
Magnetic Personalities
Answer: C - a compass!
An instrument with a magnetized needle that is allowed to swing freely is called a ________.
a) lodestone
b) switch
c) compass
d) magnetic pole
It’s Electric
Answer: A - mercury and argon vapor
A fluorescent bulb glows when electricity flows through __________________.
a) Mercury and argon vapor
b) Hot air
c) A tungsten wire filament
d) An electromagnet
It’s Electric
Answer: D - Light and heat energy!
This object changes electricity into ______________.
a) Magnetic current and sound waves
b) Sound waves and heat
c) Light and electric current
d) Light and heat energy
Opposites Attract
Answer: B - opposites attract!
The charged objects are hung from thin strings so that they can move freely. In which diagram do the objects have opposite charges?
a) c)
b) d)
Opposites Attract What will happen when the two balloons
are brought closer together?
a) The balloons will pop.
b) Positive charges will move from one balloon to another.
c) The balloon will pop.
d) The balloons will attract each other. Answer: D - the balloons will attract each other.
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Surprises
Answer: A - energy of motion into electrical energy.
How is energy changing in this picture?
a) Energy of motion into electrical energy.
b) Energy of motion is changing to chemical energy.
c) Heat and light are changing to electrical energy.
d) Heat and light are changing to chemical energy.
It’s Electric The giant electric discharge that occurs
when negative charges jump between a cloud and the ground is called ___________.
a) An electrical circuit
b) A thunderstorm
c) Lightning
d) neutral
Answer: C - lightning
Opposites Attract
Magnets on the maglev train cause the rain to rise off the rail because _______________.
a) The magnets don’t have any poles.
b) Opposite poles are facing each other.
c) Like poles are facing each other.
d) The magnets have more than two poles.
Answer: C - like poles are facing each other.
It’s Electric
Answer: A - conductors is correct!
Materials that have low resistance and allow electricity to pass through them most easily are called _____________.
a) conductors
b) fixtures
c) electromagnets
d) insulators
Surprises
What device is found inside every electric motor?
a) a light bulb
b) a clock
c) a magnet
d) An electromagnet Answer: D - an electromagnet
Magnetic Personality
Answer: D - it can be turned on or off!
What is one advantage of an electromagnet over a natural magnet?
a) An electromagnet can pick up steel.
b) An electromagnet produces a magnetic field.
c) An electromagnet produces electricity.
d) An electromagnet can be turned on or off.
Surprises
Answer: D - plastic, rubber, glass
Which group lists three good insulators?
a) Wood, rubber, aluminum
b) Paper, steel, glass
c) Plastic, water, copper
d) Plastic, rubber, glass
It’s Electric
Answer: A - Thomas Edison
Who invented the lightbulb?
a) Thomas Edison
b) George W. Bush
c) Jerry Seinfield
d) Albert Einstein
Circuit City
Answer: D The electricity stops flowing and light B will go out.
In the circuit, if light bulb A is removed what will happen?
a) the battery stops workingb) light bulb B stays litc) light bulb A stays litd) the electricity stops flowing
A B
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Daily Double
Daily Double
Whose Class is better?A) Ms. Swick’sB) Mr. CastellanosC) Mrs. MendozaD) They are equally cool
Opposites Attract
What is an antonym for conductor?A) InsulatorB) FilamentC) ConstantinopleD) Glass
Answer A! Insulator
Circuit CityA ________ is a circuit in which electric
charges can flow only in ONE path.A) Parallel circuitB) Series circuitC) Serious CircuitD) Fast Circuit
Answer C! Series circuit
Circuit CityA ________ is a circuit in which electric
charges can flow in TWO or more paths.
A) City circuit
B) Bi-circuit
C) Series circuit
D) Parallel circuit
Answer B! parallel circuit
Magnetic PersonaltiesWhat causes this doorbell to ring?
A) A current in the wire creates a magnetic field that pulls the hammer to the bell.
B) The electromagnet moves, creating an electric current in the wire that rings the bell.
C) The bell hits the hammer, creating an electric current in the electromagnet that produces a sound.
D) The bell produces a magnetic field, which creates an electric current in the electro magnet.
Answer A! A current in the wire creates a magnetic field that pulls the hammer to the bell.
Opposites Attract
You put two doughnut magnets on a pencil. One magnet floats over the other one, why does this happen?
A) Like poles are facing each otherB) It’s a miracleC) Opposite poles are facing each otherD) There is an electric current between the two magnets
Answer A! Like poles are facing each other
Final Jeopardy
Briefly explain the difference between a series circuit and a parallel circuit? How many paths does each have?