Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 633 · 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.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
2. 2.True or false: to guess, do not measure is good testing. (a) False (b) True
3. 3.🧪 A paper bridge was tested three times. It held 220 g, 160 g and 130 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) measure the same way (d) record every result
5. 5.True or false: to use the same load is poor testing. (a) False (b) True
6. 6.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
7. 7.🧪 A paper bridge was tested three times. It held 270 g, 80 g and 160 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design B (b) design A (c) design C
9. 9.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) load it with coins
10. 10.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 330 g. What is the mean (average) load it held, in grams?
11. 11.🔢 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
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design C (b) design A (c) design B
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design C (b) design A (c) design B
14. 14.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
15. 15.🔢 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
16. 16.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) test it only once (d) use the same load
17. 17.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 220 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) test it only once (d) use a new load each time
19. 19.🧪 A paper bridge was tested three times. It held 400 g, 270 g and 230 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
21. 21.🧪 A paper bridge was tested three times. It held 400 g, 300 g and 320 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
23. 23.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 390 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.🧪 A paper bridge was tested three times. It held 290 g, 210 g and 130 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to hide a failed test is poor testing. (a) False (b) True
28. 28.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
30. 30.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
31. 31.True or false: to skip writing results is good testing. (a) True (b) False
32. 32.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
33. 33.True or false: to change lots at once is poor testing. (a) True (b) False
34. 34.True or false: to use the same load is good testing. (a) False (b) True
35. 35.True or false: to test it only once is good testing. (a) True (b) False
36. 36.True or false: to repeat each test is good testing. (a) True (b) False
37. 37.True or false: to change only one thing is poor testing. (a) True (b) False
38. 38.🧪 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
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
40. 40.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) change only one thing (d) use a new load each time

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