Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 111 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the weakest? (a) design C (b) design A (c) design B
2. 2.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
4. 4.True or false: to change lots at once is good testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
6. 6.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
8. 8.True or false: to guess, do not measure is good testing. (a) True (b) False
9. 9.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
10. 10.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use a new load each time (d) use the same load
11. 11.True or false: to hide a failed test is good testing. (a) True (b) False
12. 12.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 290 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to measure the same way is poor testing. (a) False (b) True
14. 14.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
15. 15.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design B (b) design C (c) design A
17. 17.True or false: to test it only once is good testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
19. 19.True or false: to skip writing results is poor testing. (a) True (b) False
20. 20.🔢 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) choose and draw one (d) build it with straws
21. 21.🔢 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
22. 22.True or false: to measure the same way is good testing. (a) True (b) False
23. 23.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
25. 25.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
26. 26.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
28. 28.True or false: to repeat each test is poor testing. (a) False (b) True
29. 29.True or false: to use the same load is poor testing. (a) True (b) False
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design C (b) design B (c) design A
31. 31.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) record every result (d) change only one thing
33. 33.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 130 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change only one thing (d) skip writing results
35. 35.True or false: to change lots at once is poor testing. (a) False (b) True
36. 36.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
40. 40.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) repeat each test (d) record every result

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