Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 295 · 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.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the strongest? (a) design B (b) design C (c) design A
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) use a new load each time (d) change only one thing
5. 5.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
6. 6.True or false: to hide a failed test is good testing. (a) False (b) True
7. 7.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
8. 8.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
9. 9.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) change only one thing (d) record every result
12. 12.True or false: to change lots at once is good testing. (a) True (b) False
13. 13.🧪 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
14. 14.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
16. 16.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
17. 17.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
18. 18.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
19. 19.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
20. 20.True or false: to skip writing results is good testing. (a) True (b) False
21. 21.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
23. 23.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
25. 25.True or false: to skip writing results is poor testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design C (b) design B (c) design A
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design B (b) design C (c) design A
29. 29.True or false: to use a new load each time is poor testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) sketch three ideas
31. 31.True or false: to test it only once is good testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) guess, do not measure (d) use the same load
33. 33.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) hide a failed test (d) change lots at once
34. 34.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
35. 35.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) test it only once (d) repeat each test
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design C (b) design A (c) design B
37. 37.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 390 g. What is the mean (average) load it held, in grams?
38. 38.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) record every result (d) change only one thing
39. 39.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?

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