Review: Engineering Filters and Evidence
Evaluate model filtration without claiming water is safe to drink.
Bring the unit skills together
Use these 4 new cases to check your reasoning. Choices are temporary and are not saved to an account, sent to staff or recorded as school grades. Download your current review choices before leaving or reloading.
The download contains your current choices and any checked feedback. Keep the separate transfer-task work in your own document; downloading its instructions does not mark it complete.
Use the skills in a new task
Draw or write four parts for “Engineering Filters and Evidence”—one pretend example from each lesson. In each part, show what happened, give your answer, and say which clue helped you. If the question gives numbers, show your working too. Finish with one thing the practice case does not tell us. You may say your answers aloud.
Work on paper or in your own document. Explain the choices you made.
- Choose one pretend example from each of the four lessons.
- Name what each example shows.
- If the example gives numbers, show your calculation and unit. Otherwise, say which clue explains your answer.
- Say that the case details are supplied for practice; they are not your own real-life observations.
- Say one thing the example does not tell us, or one change that could give a different answer.
Compare with a model response
Panel 1: Which scientific label fits the specifically described step or feature? Supplied case: Sand remains on filter. Result: particle retention. Reasoning: The answer is particle retention. In the notes, it means “filter catches listed particles.” A filter can retain some particles while other material passes through. Clear-looking water is not necessarily safe to drink. All inputs are supplied records; never drink model-test water. Model limitation: only the stated classroom boundary and supplied observations are established; unmeasured real-world performance remains unverified. Panel 2: Supplied case 1: input particles=40; output particles=10, using the explicitly named quantities. Retained count equals input particle count minus output particle count. What result follows? Result: 30 particles. Reasoning: Substitute the supplied values: (40)-(10) = 30 particles. Count the same particle category at input and output. Keep output counts in the record. Model limitation: only the stated classroom boundary and supplied observations are established; unmeasured real-world performance remains unverified. Panel 3: Supplied case 1: retained particles=15; input particles=20, using the explicitly named quantities. Retention percentage equals 100 times retained particles divided by input particles. What result follows? Result: 75 %. Reasoning: Substitute the supplied values: 100*(15)/(20) = 75 %. Input count is the denominator. The metric is limited to the supplied test. Model limitation: only the stated classroom boundary and supplied observations are established; unmeasured real-world performance remains unverified. Panel 4: Which scientific label fits the specifically described step or feature? Supplied case: Record reports particles captured. Result: retention. Reasoning: The answer is retention. In the notes, it means “amount of target particles caught.” More particle retention may reduce flow or use more material. A design comparison should include all required criteria and matched inputs. No classroom model certifies water treatment. Model limitation: only the stated classroom boundary and supplied observations are established; unmeasured real-world performance remains unverified.
A different response can also meet the criteria. Compare the evidence and reasoning, rather than copying the wording.