Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 65 · 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 change only one thing? (a) poor testing (b) good testing
2. 2.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
3. 3.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
4. 4.🧪 A paper bridge was tested three times. It held 370 g, 320 g and 300 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
6. 6.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
7. 7.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
8. 8.True or false: to repeat each test is good testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
11. 11.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
12. 12.True or false: to hide a failed test is poor testing. (a) True (b) False
13. 13.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
14. 14.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) use a new load each time (d) use the same load
15. 15.🧪 A paper bridge was tested three times. It held 190 g, 50 g and 210 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to measure the same way is poor testing. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) measure the same way (d) guess, do not measure
18. 18.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design C (c) design A
20. 20.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
22. 22.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
23. 23.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
24. 24.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 290 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to record every result is good testing. (a) False (b) True
26. 26.🧪 A paper bridge was tested three times. It held 250 g, 90 g and 230 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
28. 28.True or false: to use a new load each time is good testing. (a) True (b) False
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
30. 30.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) change lots at once (d) record every result
32. 32.🧪 A paper bridge was tested three times. It held 160 g, 140 g and 180 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 430 g, 290 g and 330 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
35. 35.True or false: to change only one thing is poor testing. (a) True (b) False
36. 36.🧪 A paper bridge was tested three times. It held 370 g, 210 g and 350 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to change only one thing is good testing. (a) False (b) True
38. 38.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
39. 39.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
40. 40.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing

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