Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 449 · 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.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
2. 2.True or false: to hide a failed test is good testing. (a) True (b) False
3. 3.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) skip writing results (d) use the same load
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) change lots at once
7. 7.🧪 A paper bridge was tested three times. It held 260 g, 80 g and 140 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
11. 11.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
12. 12.True or false: to hide a failed test is poor testing. (a) False (b) True
13. 13.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 140 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) repeat each test (d) change only one thing
15. 15.True or false: to use the same load is good testing. (a) False (b) True
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
17. 17.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
18. 18.🧪 A paper bridge was tested three times. It held 320 g, 170 g and 290 g. What is the mean (average) load it held, in grams?
19. 19.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
20. 20.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
21. 21.True or false: to record every result is poor testing. (a) True (b) False
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) use the same load (d) skip writing results
25. 25.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) test it only once (d) record every result
26. 26.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design B (b) design C (c) design A
29. 29.True or false: to change lots at once is poor testing. (a) True (b) False
30. 30.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
31. 31.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
32. 32.True or false: to test it only once is poor testing. (a) True (b) False
33. 33.🔢 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
34. 34.True or false: to measure the same way is poor testing. (a) False (b) True
35. 35.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
36. 36.True or false: to skip writing results is good testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 450 g, 330 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to repeat each test is poor testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) measure the same way (d) record every result

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