Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 471 · 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 290 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
3. 3.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) measure the same way (d) skip writing results
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) measure the same way (d) change lots at once
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design C (b) design B (c) design A
6. 6.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 170 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 220 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
9. 9.🧪 A paper bridge was tested three times. It held 430 g, 320 g and 300 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to repeat each test is poor testing. (a) False (b) True
11. 11.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
12. 12.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to test it only once is poor testing. (a) True (b) False
14. 14.🔢 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
15. 15.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 250 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to guess, do not measure is good testing. (a) True (b) False
17. 17.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the strongest? (a) design A (b) design C (c) design B
20. 20.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
21. 21.True or false: to use a new load each time is good testing. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
23. 23.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
25. 25.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 330 g, 190 g and 320 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
28. 28.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
29. 29.True or false: to measure the same way is good testing. (a) True (b) False
30. 30.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
31. 31.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 390 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 350 g, 280 g and 390 g. What is the mean (average) load it held, in grams?
33. 33.True or false: to record every result is good testing. (a) True (b) False
34. 34.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
35. 35.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
36. 36.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) change only one thing (d) use a new load each time
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design B (b) design A (c) design C
38. 38.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
40. 40.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?

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