Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 415 · 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, 250 g and 330 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the strongest? (a) design B (b) design C (c) design A
4. 4.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
5. 5.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
6. 6.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
7. 7.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
8. 8.True or false: to change only one thing is good testing. (a) True (b) False
9. 9.🧪 A paper bridge was tested three times. It held 160 g, 50 g and 240 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
11. 11.True or false: to guess, do not measure is good testing. (a) True (b) False
12. 12.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
13. 13.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) read the challenge rules
14. 14.True or false: to test it only once is good testing. (a) False (b) True
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the weakest? (a) design B (b) design C (c) design A
16. 16.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
18. 18.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) use a new load each time
19. 19.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
20. 20.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 210 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
22. 22.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) repeat each test (d) use the same load
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
27. 27.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
28. 28.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
29. 29.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
30. 30.🧪 A paper bridge was tested three times. It held 250 g, 70 g and 190 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 170 g, 80 g and 200 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
33. 33.🧪 A paper bridge was tested three times. It held 330 g, 170 g and 220 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to hide a failed test is good testing. (a) True (b) False
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the strongest? (a) design B (b) design C (c) design A
36. 36.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) load it with coins
37. 37.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 360 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to measure the same way is good testing. (a) False (b) True
39. 39.True or false: to change lots at once is poor testing. (a) True (b) False
40. 40.🧪 A paper bridge was tested three times. It held 240 g, 160 g and 110 g. What is the mean (average) load it held, in grams?

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