Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 372 · 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.True or false: to change only one thing is good testing. (a) False (b) True
2. 2.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
3. 3.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use the same load (d) hide a failed test
4. 4.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) hide a failed test
5. 5.True or false: to test it only once is poor testing. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) guess, do not measure
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) hide a failed test (d) repeat each test
8. 8.🧪 A paper bridge was tested three times. It held 330 g, 160 g and 230 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) strengthen the weak part
12. 12.True or false: to change only one thing is poor testing. (a) False (b) True
13. 13.🧪 A paper bridge was tested three times. It held 240 g, 100 g and 260 g. What is the mean (average) load it held, in grams?
14. 14.True or false: to hide a failed test is good testing. (a) True (b) False
15. 15.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
16. 16.True or false: to skip writing results is good testing. (a) True (b) False
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
18. 18.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
19. 19.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) change only one thing (d) repeat each test
22. 22.True or false: to measure the same way is poor testing. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) guess, do not measure (d) hide a failed test
24. 24.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design A (b) design C (c) design B
26. 26.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
27. 27.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
28. 28.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) change lots at once (d) use a new load each time
29. 29.🧪 A paper bridge was tested three times. It held 220 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
30. 30.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) build it with straws
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.🧪 A paper bridge was tested three times. It held 400 g, 330 g and 320 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
36. 36.True or false: to repeat each test is good testing. (a) False (b) True
37. 37.🧪 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 C (b) design B (c) design A
38. 38.True or false: to guess, do not measure is poor testing. (a) True (b) False
39. 39.True or false: to use the same load is good testing. (a) False (b) True
40. 40.True or false: to test it only once is good testing. (a) True (b) False

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