Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 632 · 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.🧪 A paper bridge was tested three times. It held 390 g, 340 g and 320 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to use the same load is poor testing. (a) False (b) True
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design B (b) design C (c) design A
4. 4.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) hide a failed test (d) measure the same way
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
6. 6.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) guess, do not measure (d) record every result
9. 9.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
11. 11.🔍 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
12. 12.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
13. 13.True or false: to repeat each test is poor testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 220 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
17. 17.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the strongest? (a) design B (b) design A (c) design C
19. 19.True or false: to record every result is good testing. (a) False (b) True
20. 20.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 340 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) choose and draw one
23. 23.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) hide a failed test (d) change lots at once
24. 24.🧪 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 C (b) design A (c) design B
25. 25.True or false: to change lots at once is poor testing. (a) True (b) False
26. 26.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
27. 27.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
28. 28.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
29. 29.🧪 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 strongest? (a) design C (b) design A (c) design B
30. 30.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) skip writing results (d) change lots at once
31. 31.True or false: to test it only once is poor testing. (a) False (b) True
32. 32.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
33. 33.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) guess, do not measure (d) hide a failed test
34. 34.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 150 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
37. 37.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
38. 38.True or false: to measure the same way is good testing. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) change lots at once (d) hide a failed test
40. 40.🧪 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 strongest? (a) design B (b) design C (c) design A

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