Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 820 · 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 record every result is poor testing. (a) False (b) True
2. 2.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
3. 3.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
4. 4.True or false: to measure the same way is good testing. (a) True (b) False
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the weakest? (a) design A (b) design C (c) design B
6. 6.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) skip writing results (d) use the same load
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
8. 8.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) repeat each test (d) use the same load
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
11. 11.🧪 A paper bridge was tested three times. It held 350 g, 210 g and 310 g. What is the mean (average) load it held, in grams?
12. 12.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
13. 13.🧪 A paper bridge was tested three times. It held 220 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the weakest? (a) design B (b) design A (c) design C
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
16. 16.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
17. 17.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
18. 18.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) choose and draw one
20. 20.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design A (b) design B (c) design C
23. 23.True or false: to use the same load is good testing. (a) False (b) True
24. 24.True or false: to repeat each test is good testing. (a) True (b) False
25. 25.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
27. 27.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 150 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
29. 29.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) repeat each test (d) record every result
31. 31.True or false: to use a new load each time is good testing. (a) True (b) False
32. 32.True or false: to use a new load each time is poor testing. (a) True (b) False
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
34. 34.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
36. 36.True or false: to skip writing results is good testing. (a) False (b) True
37. 37.🔢 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
38. 38.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
39. 39.True or false: to hide a failed test is good testing. (a) False (b) True
40. 40.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing

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