Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 787 · 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) skip writing results (b) repeat each test (c) test it only once (d) use a new load each time
2. 2.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
3. 3.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
4. 4.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) hide a failed test (d) repeat each test
5. 5.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change lots at once (d) use a new load each time
6. 6.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
7. 7.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) use the same load (d) repeat each test
8. 8.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
9. 9.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
10. 10.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
11. 11.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design C (b) design A (c) design B
14. 14.True or false: to measure the same way is good testing. (a) True (b) False
15. 15.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) test it only once (d) guess, do not measure
17. 17.🧪 A paper bridge was tested three times. It held 390 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to use the same load is poor testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design B (b) design A (c) design C
20. 20.True or false: to use the same load is good testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design B (b) design A (c) design C
22. 22.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
23. 23.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
25. 25.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
26. 26.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) build it with straws
28. 28.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) change only one thing (d) measure the same way
29. 29.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
30. 30.True or false: to guess, do not measure is good testing. (a) True (b) False
31. 31.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
32. 32.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
33. 33.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 340 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 370 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
37. 37.True or false: to repeat each test is good testing. (a) False (b) True
38. 38.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) load it with coins
40. 40.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?

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