Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 269 · 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.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) repeat each test (d) change lots at once
2. 2.🧪 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
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) use a new load each time (d) change only one thing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
5. 5.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design B (b) design A (c) design C
7. 7.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
8. 8.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
9. 9.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
10. 10.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
11. 11.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
12. 12.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
13. 13.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) skip writing results (d) measure the same way
14. 14.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 170 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the strongest? (a) design C (b) design A (c) design B
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design A (c) design C
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
18. 18.True or false: to record every result is poor testing. (a) True (b) False
19. 19.🧪 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 A (b) design C (c) design B
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
21. 21.True or false: to guess, do not measure is good testing. (a) True (b) False
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the strongest? (a) design A (b) design C (c) design B
23. 23.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
24. 24.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
25. 25.True or false: to change lots at once is poor testing. (a) True (b) False
26. 26.🧪 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 C (b) design B (c) design A
27. 27.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) test it only once (d) change only one thing
28. 28.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
29. 29.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
30. 30.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) record every result (d) use the same load
32. 32.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
33. 33.True or false: to hide a failed test is good testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 290 g, 250 g and 210 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
36. 36.True or false: to use a new load each time is good testing. (a) False (b) True
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design A (b) design B (c) design C
38. 38.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) load it with coins (d) strengthen the weak part
39. 39.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) test it only once (d) hide a failed test

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