Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 106 · 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 290 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
4. 4.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
5. 5.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) load it with coins
6. 6.🧪 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 A (b) design C (c) design B
7. 7.True or false: to test it only once is good testing. (a) True (b) False
8. 8.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
9. 9.True or false: to measure the same way is poor testing. (a) False (b) True
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) load it with coins
11. 11.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
12. 12.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
13. 13.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
14. 14.🧪 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 C (c) design B
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
17. 17.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change lots at once (d) change only one thing
18. 18.True or false: to use the same load is good testing. (a) False (b) True
19. 19.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) choose and draw one
20. 20.🧪 A paper bridge was tested three times. It held 340 g, 280 g and 220 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
22. 22.True or false: to skip writing results is good testing. (a) False (b) True
23. 23.True or false: to repeat each test is poor testing. (a) False (b) True
24. 24.True or false: to record every result is good testing. (a) False (b) True
25. 25.🧪 A paper bridge was tested three times. It held 260 g, 220 g and 180 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 350 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 370 g, 190 g and 310 g. What is the mean (average) load it held, in grams?
28. 28.🔢 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
29. 29.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
30. 30.True or false: to change lots at once is good testing. (a) False (b) True
31. 31.🧪 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 A (c) design C
32. 32.True or false: to repeat each test is good testing. (a) True (b) False
33. 33.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 320 g, 240 g and 220 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 350 g, 320 g and 320 g. What is the mean (average) load it held, in grams?
36. 36.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) measure the same way (d) hide a failed test
37. 37.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) change only one thing (d) measure the same way
38. 38.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
39. 39.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws

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