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Grade 4_Lesson 4.2-Circuits
Test Description: Test review questions on Lesson 4.2
Instructions: Answer all questions to get your test result.
1) What are the tiny building blocks of EVERYTHING?
A
Cotton
B
Atoms
C
Molecules
D
Elements
2) Which of the following is not one of the three types of particles?
A
wires
B
neutrons
C
protons
D
electrons
3) What type of charge do neutrons have?
A
electro-negative
B
neutral
C
negagive
D
positive
4) Static electricity builds up when ______ and ______ charges are no longer balanced.
A
positive and negative
B
electronegative and negative
C
neutral and negative
D
positive and neutral
5) What does 'balanced charges' mean?
A
There are the same number of positive and negative particles.
B
There are more negative particles than positive particles.
C
There are more positive particles than neutral particles.
D
There are less negative particles than positive charges.
6) A ___________ is a type of material through which an electric charge can flow through easily.
A
Rubber
B
Insulator
C
Conductor
D
Element
7) One example of a insulator is a ________.
A
Pencil Eraser
B
Water
C
Lead of a pencil (grapite)
D
Gold
8) A material through which an electric charge moves with difficulty (does not flow through easily) is called?
A
Molecules
B
Conductor
C
Insulator
D
Atoms
9) Suppose you have a set of lights that are wired in a parallel circuit. What will happen to the circuit if one of the bulbs burn out (stops working)?
A
The circuit will not work.
B
All the other bulbs will still light up.
10) A circuit with at least one break is called a ______ circuit.
A
Closed
B
Complete
C
Open
D
Detached
11) A circuit with no break is called a ______ circuit.
A
Open
B
Broken
C
Complete
D
Faulty
12) Name the four parts of a circuit.
A
think carefully
B
think carefully
C
think carefully
D
think carefully
13) What is the difference between an open circuit and an open circuit?
A
think carefully
B
think carefully
C
think carefully
D
think carefully
14) In a _____________ circuit, the electric charge can flow in only one circular path.
A
parallel
B
closed
C
open
D
series
*select an answer for all questions
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