Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 636 · 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.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
2. 2.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 230 g. What is the mean (average) load it held, in grams?
3. 3.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) repeat each test (d) skip writing results
4. 4.True or false: to record every result is poor testing. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) repeat each test (d) change lots at once
6. 6.True or false: to hide a failed test is good testing. (a) False (b) True
7. 7.🧪 A paper bridge was tested three times. It held 440 g, 270 g and 310 g. What is the mean (average) load it held, in grams?
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) measure the same way (d) use the same load
9. 9.🧪 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
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
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 250 g, 190 g and 130 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 210 g, 170 g and 160 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 290 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) guess, do not measure (d) change only one thing
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) load it with coins
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
18. 18.True or false: to use a new load each time is good testing. (a) False (b) True
19. 19.🧪 A paper bridge was tested three times. It held 430 g, 250 g and 310 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.🧪 A paper bridge was tested three times. It held 420 g, 340 g and 260 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to guess, do not measure is poor testing. (a) False (b) True
23. 23.True or false: to use a new load each time is poor testing. (a) True (b) False
24. 24.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use a new load each time (d) measure the same way
26. 26.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
27. 27.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
28. 28.🧪 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 B (b) design A (c) design C
29. 29.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
30. 30.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
31. 31.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
32. 32.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 300 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 140 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 290 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 80 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
37. 37.🧪 A paper bridge was tested three times. It held 240 g, 120 g and 90 g. What is the mean (average) load it held, in grams?
38. 38.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) guess, do not measure (d) test it only once
39. 39.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?

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