Electricity And Magnetism Review Game Question Preview (ID: 35807)
Ch. 13.
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What happens when the switch is open in an electric circuit?
a) The electric charges flow through the loop.
b) The electric charges stop flowing.
c) A resistor heats up a light.
d) The wires heat up.
In a series circuit, when one of the bulbs burn out, the rest of the bulbs will ____.
a) only one bulb lights up
b) none of the bulbs light up
c) All of the bulbs light up except the one that burns out
d) All of the bulbs light up.
Why are plastic and rubber used to cover electric wires?
a) They speed up the flow of electrons.
b) They are good insulators and prevent electricity from coming in contact with other things.
c) They are good at passing electricity from one wire to another.
d) They are good conductors of electricity.
How do you allow electric charges to flow in a circuit?
a) You open the circuit.
b) You close the circuit.
c) You break the circuit.
d) You disconnect the wires.
In a parallel circuit, electrical current has ______________ paths to follow.
a) only one
b) two or more
c) none
d) I have no idea
How does an electric current flow?
a) It travels slowly.
b) It travels quickly and the shortest pathway
c) It stays in one place.
d) It travels quickly and the longest pathway.
Which two objects will repel each other?
a) a negatively charged balloon and a neutral balloon
b) a positively charged balloon and a positively charged balloon
c) a neutral balloon and a neutral piece of paper
d) a negatively charged balloon and a positively charged balloon
What produces a spark of electricity when you run across carpet and touch a door knob?
a) Positive and negative charges are balanced
b) Positive and negative charges are unbalanced.
c) There are twice as many positive charges as negative charges.
d) Positive charges repel negative charges.
Which particles are the ones that move from one object to another?
a) protons
b) electrons
c) neutrons
d) newtons
What are the three types of particles found in atoms?
a) protons, newtons, electricons
b) protons, electrons, neutrons
c) protons, neutrons, magnitrons
d) electrons, newtons, magnitrons
Where is the magnetic field located for all magnets?
a) It is only around a magnet's poles.
b) It goes in all directions around a magnet.
c) It is only around a magnet's center.
d) It goes out in one direction from a magnet.
Which surrounds Earth?
a) electric field
b) magnetic field
c) magnetic current
d) electric current
Where is the magnetic field strongest on a magnet?
a) at the north pole of a magnet
b) at both poles of a magnet
c) at the south pole of a magnet
d) at the center of a magnet
What happens when you break a magnet into two pieces?
a) One piece will have the north-seeking pole and the other piece will have the south-seeking pole.
b) Each piece will have a north and a south pole.
c) Each piece will have a north seeking pole and a neutral pole.
d) Both magnets will lose their magnetism.
What is Earth's outer core made of that makes scientists think that Earth is like a huge magnet?
a) hot lava
b) hot melted iron
c) hot melted copper
d) harden rock
What makes an electromagnet different from a regular magnet?
a) An electromagnet has a magnetic field.
b) An electromagnet can be turned off and on.
c) An electromagnet affects a compass needle.
d) An electromagnet has two poles.
What happens when the number of coils in an electromagnet is increased?
a) The core of the electromagnet becomes smaller.
b) The electromagnet becomes stronger.
c) The core of the electromagnet becomes larger.
d) The core of the electromagnet becomes weaker.
What happens when electric current in an electromagnet is stopped?
a) The wires becomes magnetized.
b) The wire loses its magnetism.
c) The electromagnet becomes stronger.
d) The electrical energy becomes stronger.
What is an important part of every generator?
a) a source of falling water
b) a magnet
c) solar energy
d) chemical energy
Which of the following is NOT a source of power for generating electricity?
a) falling water
b) light bulbs
c) nuclear energy
d) wind
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