Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 238 · 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 test it only once? (a) poor testing (b) good testing
2. 2.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
4. 4.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
7. 7.True or false: to change only one thing is poor testing. (a) True (b) False
8. 8.True or false: to test it only once is good testing. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) skip writing results (d) measure the same way
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) guess, do not measure (d) hide a failed test
11. 11.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
12. 12.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) change only one thing (d) use the same load
13. 13.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
14. 14.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
15. 15.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
16. 16.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 270 g. What is the mean (average) load it held, in grams?
17. 17.True or false: to skip writing results is poor testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
19. 19.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) measure the same way (d) use a new load each time
20. 20.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
21. 21.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
22. 22.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) repeat each test (d) skip writing results
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design C (b) design B (c) design A
24. 24.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
25. 25.True or false: to use a new load each time is good testing. (a) True (b) False
26. 26.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
28. 28.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) sketch three ideas
29. 29.True or false: to use the same load is poor testing. (a) False (b) True
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) strengthen the weak part
32. 32.True or false: to hide a failed test is good testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
34. 34.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
35. 35.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the weakest? (a) design A (b) design C (c) design B
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design B (b) design C (c) design A
38. 38.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) use the same load (d) measure the same way
39. 39.🧪 A paper bridge was tested three times. It held 390 g, 300 g and 270 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing

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