Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 902 · 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 260 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
2. 2.🧪 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?
3. 3.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) hide a failed test (d) measure the same way
4. 4.True or false: to repeat each test is good testing. (a) True (b) False
5. 5.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
7. 7.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
8. 8.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) build it with straws
9. 9.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
10. 10.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 190 g. What is the mean (average) load it held, in grams?
13. 13.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) measure the same way (d) test it only once
14. 14.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 400 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design B (b) design A (c) design C
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.🧪 A paper bridge was tested three times. It held 180 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to use the same load is poor testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
20. 20.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) guess, do not measure (d) repeat each test
21. 21.True or false: to record every result is good testing. (a) False (b) True
22. 22.True or false: to change only one thing is poor testing. (a) True (b) False
23. 23.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 290 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to hide a failed test is good testing. (a) False (b) True
25. 25.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design C (b) design B (c) design A
27. 27.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
29. 29.True or false: to use a new load each time is good testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) build it with straws
31. 31.True or false: to change lots at once is poor testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 320 g, 160 g and 210 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 260 g, 90 g and 130 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) change only one thing (d) skip writing results
35. 35.🔢 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
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the strongest? (a) design B (b) design A (c) design C
37. 37.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) change only one thing (d) repeat each test
38. 38.True or false: to repeat each test is poor testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 80 g. What is the mean (average) load it held, in grams?

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