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Electric Circuits Review
Test Description: Review for Unit 3 test.
Instructions: Answer all questions to get your test result.
1) What are the three main parts of a circuit?
A
energy source, path, load
B
load, path, switch
C
Energy source, path, gravity
D
path, energy, protons
2) What is a current?
A
A continuous flow of electrons
B
A continuous flow of protons
C
gravitational attraction
D
A continuous flow of neutrons
3) How does the switch need to be for the circuit to work?
A
The switch needs to be closed.
B
The switch has to be touching the battery.
C
The switch needs to be open.
D
The switch needs to be connected to only one wire.
4) Which is a correct list of conductors?
A
aluminum, copper, steel, plastic
B
copper, wood, plastic, silver
C
steel, copper, aluminum, silver
D
steel, wool, copper, paper
5) What is the purpose of the plastic covering wires in circuits?
A
The plastic is an insulator which helps keep you from getting shocked.
B
The plastic makes the wire colorful.
C
The plastic is a conductor and will keep the charges from flowing.
D
The plastic is a conductor which helps keep you from getting shocked.
6) If you have more than one battery in a circuit, how should the batteries be placed for the circuit to work?
A
There should be only one battery used.
B
The positive terminal of one battery should be connected to the positive terminal of the other battery.
C
The negative terminal of one battery should be connected to the negative terminal of the other battery.
D
The positive terminal of one battery must be connected to the negative end of the other battery.
7) In a parallel circuit with more than one bulb, what will happen if one bulb goes out?
A
One bulb will stay lit and one bulb will go out because the charges will be divided.
B
None of the bulbs will remain lit because the charges will not flow any longer.
C
The other two bulbs will continue to stay lit because the electrons are flowing along more than one path.
D
None of the bulbs will work until you replace the one that is no longer lit.
8) What is an example of static electricity and electric discharge?
A
water flowing in a dam
B
a battery connected to a wire to cause a light bulb to light up
C
a light switch that is turned on runs a stove
D
lightning in a storm
9) What is the energy source in a simple circuit?
A
a switch
B
a dry cell or battery
C
a wire
D
a buzzer
10) In what kind of circuit does the electricity flow along more than one path?
A
a switch circuit
B
a series circuit
C
a parallel circuit
D
a really big circuit
11) In a series circuit with more than one bulb, what will happen if one of the bulbs goes out?
A
All of the bulbs will go out even though the charges are flowing on different paths.
B
The other bulbs will go out as well because there is only one path for the electrons to flow.
C
The other bulbs will remain lit because the electrons are flowing on different paths.
D
Every other bulb will remain lit because the charges will skip over the unlit ones.
12) Which part of the atom has a negative charge?
A
neutron
B
nucleus
C
proton
D
electron
13) After you charge a balloon, why does rice cereal or bits of paper stick to a balloon?
A
Since the balloon has been charged, the balloon will now have more electrons than the cereal or bits of paper.
B
A balloon can not be charged.
C
Since the balloon has been charged, the balloon will now have more protons than the cereal or bits of paper.
D
Since the balloon has been charged, the balloon will now have more neutrons than the cereal or bits of paper.
14) What does the Law of Electric Charges say?
A
Opposite charges repel and like charges attract.
B
Opposite charges attract and like charges repel.
C
Charges can be distributed equally to objects.
D
Charges never are attracted to each other.
15) In an electrical circuit with a battery and a bulb, what energy conversion takes place?
A
Chemical energy converts to electrical energy, light energy, and thermal energy.
B
Electrical energy converts to chemical energy, light energy, and thermal energy.
C
Chemical energy coverts to electrical energy, sound energy, and mechanical energy.
D
Light energy converts to chemical energy, electrical energy, and thermal energy.
16) If the switch of a circuit is opened, what happens to the electrons?
A
The electrons will stop flowing causing the current to stop.
B
The electrons will run away.
C
The electrons will continue flowing.
D
The electrons will hop over the opening.
17) Which are examples of insulators?
A
rubber, plastic, paper, glass
B
plastic, copper, brick, fabric
C
rubber, glass, wood, steel
D
paper, steel, rubber, brick
18) Which part of the atom has a positive charge?
A
electron
B
neutron
C
nucleus
D
proton
19) How many paths are there for charges to flow on in a series circuit?
A
three
B
one
C
two
D
four
*select an answer for all questions
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