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DC-CAS Review
Test Description: Review questions for 8th grade science dc-cas
Instructions: Answer all questions to get your test result.
1) In order to neutralize tomato juice, how much would the concentration of hydrogen ions need to decrease?
A
3 times
B
0 times
C
10 times
D
30 times
2) As wavelength increases, frequency
A
decreases
B
stays the same
C
increases
D
multiplies by ten
3) A train is moving at 60 miles per hour and comes to a stop inside a station over a course of 12 minutes. What is the acceleration of the train?
A
5 miles/minute
B
-5 miles/minute
C
-5 miles/hour
D
720 miles/minute
4) Which of the following is NOT a type of energy?
A
Chemical
B
Temperature
C
Electrical
D
Thermal
5) Dennis is conducting an investigation to determine the effect of caffeine on heartrate. Which of the following will Dennis not maintain as a constant?
A
Age
B
Caffeine intake
C
Heartrate
D
Type of caffeine
6) Which of the following is not a conductor?
A
Water
B
Power lines
C
Rubber
D
Metal
7) You drop a penny from the Empire State Building. After several seconds, the air resistance becomes equal to the force of gravity impacting the penny. What results?
A
The penny accelerates
B
The penny comes to a stop
C
The penny falls at a constant speed
D
The penny doubles its velocity
8) A book slides across a level table. As the book travels, it slows down. Which best explains its change in speed?
A
The force applied to the book is balanced by the force of friction
B
The force applied to the book decreases over time
C
The force is no longer applied to the book so there is zero net force on the book
D
The force of friction is unbalanced which changes the motion of the book
9) Define inertia
A
An object\'s resistance to movement
B
An insulator
C
Displacement
D
The matter an object contains
10) I am a circuit with multiple energy sources and a battery that light up consecutively. What type of circuit am I?
A
Ohms Circuit
B
Series Circuit
C
Parallel Circuit
D
Simple Circuit
*select an answer for all questions
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