Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 193 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
2. 2.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
4. 4.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 300 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) guess, do not measure (d) use the same load
6. 6.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
7. 7.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
8. 8.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
9. 9.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
10. 10.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
12. 12.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
14. 14.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 280 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
16. 16.True or false: to skip writing results is poor testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
18. 18.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
19. 19.True or false: to skip writing results is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
21. 21.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design B (b) design A (c) design C
23. 23.True or false: to hide a failed test is good testing. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) change lots at once (d) guess, do not measure
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
26. 26.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
27. 27.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
29. 29.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
30. 30.True or false: to repeat each test is poor testing. (a) True (b) False
31. 31.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
33. 33.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
34. 34.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) guess, do not measure (d) use a new load each time
35. 35.True or false: to change lots at once is good testing. (a) True (b) False
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the strongest? (a) design B (b) design C (c) design A
37. 37.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) hide a failed test (d) use the same load
39. 39.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C

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