Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 927 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
2. 2.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
3. 3.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
4. 4.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
5. 5.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 410 g. What is the mean (average) load it held, in grams?
6. 6.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
8. 8.🧪 A paper bridge was tested three times. It held 260 g, 230 g and 290 g. What is the mean (average) load it held, in grams?
9. 9.🧪 A paper bridge was tested three times. It held 230 g, 200 g and 170 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) repeat each test
11. 11.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 110 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) change only one thing (d) repeat each test
13. 13.True or false: to change lots at once is good testing. (a) False (b) True
14. 14.🔢 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
15. 15.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 130 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 190 g. What is the mean (average) load it held, in grams?
18. 18.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
20. 20.True or false: to repeat each test is poor testing. (a) False (b) True
21. 21.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
22. 22.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
23. 23.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change lots at once (d) measure the same way
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
25. 25.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 300 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change lots at once (d) change only one thing
27. 27.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
28. 28.🧪 A paper bridge was tested three times. It held 210 g, 180 g and 180 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) choose and draw one
30. 30.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
31. 31.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
32. 32.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
33. 33.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
34. 34.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
35. 35.🧪 A paper bridge was tested three times. It held 180 g, 110 g and 250 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to hide a failed test is poor testing. (a) False (b) True
37. 37.True or false: to hide a failed test is good testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 250 g, 90 g and 110 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) read the challenge rules
40. 40.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?

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