Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 75 · 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.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
2. 2.True or false: to repeat each test is good testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
5. 5.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 200 g. What is the mean (average) load it held, in grams?
6. 6.True or false: to guess, do not measure is good testing. (a) False (b) True
7. 7.True or false: to measure the same way is good testing. (a) True (b) False
8. 8.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
10. 10.True or false: to measure the same way is poor testing. (a) True (b) False
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the weakest? (a) design A (b) design B (c) design C
12. 12.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
13. 13.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) hide a failed test (d) use a new load each time
14. 14.🔢 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
15. 15.True or false: to record every result is good testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
17. 17.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 360 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to change lots at once is poor testing. (a) False (b) True
19. 19.True or false: to use a new load each time is poor testing. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) record every result (d) change only one thing
21. 21.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
22. 22.True or false: to use a new load each time is good testing. (a) True (b) False
23. 23.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 250 g. What is the mean (average) load it held, in grams?
24. 24.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) measure the same way (d) use the same load
26. 26.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
27. 27.True or false: to change lots at once is good testing. (a) True (b) False
28. 28.True or false: to hide a failed test is poor testing. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) hide a failed test (d) record every result
30. 30.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
31. 31.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
32. 32.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 300 g. What is the mean (average) load it held, in grams?
33. 33.🧪 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 B (b) design C (c) design A
34. 34.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design A (b) design C (c) design B
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the strongest? (a) design A (b) design B (c) design C
37. 37.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
38. 38.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) change lots at once (d) guess, do not measure
40. 40.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?

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