Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 813 · 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 270 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design A (b) design C (c) design B
2. 2.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) measure the same way (d) change only one thing
3. 3.True or false: to use a new load each time is good testing. (a) True (b) False
4. 4.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
5. 5.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
6. 6.True or false: to use a new load each time is poor testing. (a) True (b) False
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design A (b) design C (c) design B
8. 8.True or false: to guess, do not measure is good testing. (a) False (b) True
9. 9.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
12. 12.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
13. 13.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
14. 14.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) repeat each test (d) measure the same way
15. 15.True or false: to change only one thing is good testing. (a) False (b) True
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
17. 17.True or false: to record every result is poor testing. (a) False (b) True
18. 18.True or false: to skip writing results is good testing. (a) True (b) False
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design B (b) design A (c) design C
20. 20.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change lots at once (d) guess, do not measure
21. 21.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) sketch three ideas
22. 22.True or false: to change lots at once is good testing. (a) True (b) False
23. 23.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
24. 24.True or false: to measure the same way is poor testing. (a) False (b) True
25. 25.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
26. 26.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
28. 28.True or false: to change only one thing is poor testing. (a) False (b) True
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design A (b) design C (c) design B
30. 30.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
31. 31.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) hide a failed test (d) record every result
32. 32.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 310 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 250 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.🧪 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 strongest? (a) design C (b) design A (c) design B
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
37. 37.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
38. 38.True or false: to hide a failed test is good testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 290 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?

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