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Define Problems with Criteria and Constraints
Worksheet
Grade Level
Grade 8
8.123 Define Problems with Criteria and Constraints
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A classroom aquarium needs water circulation without stressing small fish. Which statement best defines the engineering problem?
A
Improve water movement in the aquarium so fish are healthier.
B
Design a gentle circulation system that moves at least 1 liter of water per minute through the tank model, keeps flow speed below a level that pushes a floating bead more than 5 centimeters per second, uses a small pump already available, costs under $10, and is easy to remove for cleaning.
C
Install the strongest pump available to move more water.
D
Design a system that keeps aquarium water perfect forever.
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