Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 806 · 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) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
2. 2.True or false: to use the same load is good testing. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change lots at once (d) record every result
4. 4.True or false: to change only one thing is good testing. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) test it only once (d) guess, do not measure
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 use a new load each time? (a) poor testing (b) good testing
8. 8.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) load it with coins
9. 9.True or false: to use the same load is poor testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) use a new load each time (d) hide a failed test
12. 12.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) measure the same way (d) hide a failed test
13. 13.🔢 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
14. 14.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
15. 15.True or false: to use a new load each time is good testing. (a) True (b) False
16. 16.🧪 A paper bridge was tested three times. It held 340 g, 170 g and 300 g. What is the mean (average) load it held, in grams?
17. 17.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design C (b) design A (c) design B
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design C (b) design B (c) design A
20. 20.True or false: to guess, do not measure is poor testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 230 g, 130 g and 90 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to measure the same way is good testing. (a) True (b) False
23. 23.🔢 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
24. 24.🧪 A paper bridge was tested three times. It held 390 g, 280 g and 290 g. What is the mean (average) load it held, in grams?
25. 25.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
26. 26.True or false: to skip writing results is poor testing. (a) False (b) True
27. 27.🧪 A paper bridge was tested three times. It held 340 g, 180 g and 320 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design A (c) design B
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) test it only once (d) change only one thing
32. 32.True or false: to change lots at once is poor testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
34. 34.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
35. 35.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
36. 36.True or false: to change lots at once is good testing. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) use a new load each time (d) change lots at once
38. 38.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
39. 39.True or false: to test it only once is good testing. (a) False (b) True
40. 40.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?

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