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8th Grade Science 2nd Quarter Assessment Practice (Part 1)
Test Description: This practice will help you prepare for the upcoming summative assessment.
Instructions: Answer all questions to get your test result.
1) A seesaw is an excellent example of a ______________.
A
no class lever
B
third class lever
C
second class lever
D
first class lever
2) A zipline tour utilizes this type of pulley:
A
movable
B
block and tickle
C
fixed
D
block and tackle
3) A commonly used wedge in the kitchen is a _______.
A
spoon
B
egg whisk
C
spatula
D
knife
4) Which of the following best describes a compound machine?
A
When you utilize a lever as your simple machine.
B
When you utilize an inclined plane as your simple machine.
C
When you combine several simple machines to make a more complex machine.
D
When you have a simple machine that assists with chemical reactions.
5) What are the two forces used to determine the mechanical advantage of a machine?
A
input, sideput
B
sideput, throughput
C
input, throughput
D
input, output
6) To calculate mechanical advantage, use the following equation:
A
Output Force/Input Force
B
Output Force/Output Force
C
Input Force/Output Force
D
Input Force/Input Force
7) The mechanical advantage of a machine with input force of 8 N, and output force of 40 N is _____.
A
5
B
320
C
0.2
D
32
8) Determine the mechanical advantage of a ramp with height 3 m, and length of 30 m.
A
90
B
0.10
C
10
D
27
9) Which of the following machines would make it the easiest to move a 100 lb TV?
A
A machine with mechanical advantage of 2.
B
A machine with mechanical advantage of 4.
C
A machine with mechanical advantage of 5.75.
D
A machine with mechanical advantage of 0.5.
10) As someone increases the height of an inclined plane, what happens to the mechanical advantage?
A
It stays the same.
B
The mechanical advantage disappears.
C
The mechanical advantage decreases.
D
The mechanical advantage increases.
*select an answer for all questions
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