Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 374 · 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.True or false: to use a new load each time is poor testing. (a) False (b) True
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design C (b) design B (c) design A
3. 3.True or false: to skip writing results is good testing. (a) False (b) True
4. 4.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 280 g. What is the mean (average) load it held, in grams?
5. 5.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
6. 6.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
7. 7.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
8. 8.🧪 A paper bridge was tested three times. It held 180 g, 110 g and 190 g. What is the mean (average) load it held, in grams?
9. 9.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
10. 10.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
11. 11.True or false: to skip writing results is poor testing. (a) False (b) True
12. 12.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
13. 13.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) test it only once (d) skip writing results
14. 14.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) skip writing results (d) change only one thing
16. 16.True or false: to change lots at once is poor testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
18. 18.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
19. 19.🧪 A paper bridge was tested three times. It held 270 g, 140 g and 220 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design A (b) design C (c) design B
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) read the challenge rules (d) sketch three ideas
22. 22.🧪 A paper bridge was tested three times. It held 260 g, 140 g and 170 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design C (b) design A (c) design B
24. 24.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
25. 25.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
26. 26.True or false: to repeat each test is good testing. (a) False (b) True
27. 27.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
28. 28.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to hide a failed test is good testing. (a) False (b) True
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 410 g. What is the mean (average) load it held, in grams?
32. 32.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
33. 33.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) skip writing results (d) measure the same way
34. 34.🧪 A paper bridge was tested three times. It held 330 g, 280 g and 260 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
36. 36.True or false: to guess, do not measure is good testing. (a) False (b) True
37. 37.True or false: to measure the same way is poor testing. (a) False (b) True
38. 38.🧪 A paper bridge was tested three times. It held 450 g, 320 g and 280 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design A (b) design C (c) design B

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