Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 278 · 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.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
2. 2.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
3. 3.🧪 A paper bridge was tested three times. It held 340 g, 310 g and 340 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the strongest? (a) design A (b) design C (c) design B
5. 5.True or false: to measure the same way is poor testing. (a) True (b) False
6. 6.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
7. 7.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
8. 8.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 360 g. What is the mean (average) load it held, in grams?
10. 10.🧪 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 C (b) design A (c) design B
11. 11.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
12. 12.True or false: to change lots at once is good testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
14. 14.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
15. 15.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
16. 16.True or false: to change only one thing is poor testing. (a) False (b) True
17. 17.🧪 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 B (b) design C (c) design A
18. 18.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 240 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to test it only once is poor testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design B (b) design A (c) design C
22. 22.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 180 g, 160 g and 170 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) repeat each test (d) change lots at once
27. 27.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 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) strengthen the weak part (b) sketch three ideas
29. 29.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
30. 30.True or false: to use a new load each time is poor testing. (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 170 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) skip writing results (d) record every result
33. 33.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
34. 34.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) record every result (d) hide a failed test
35. 35.True or false: to use the same load is good testing. (a) True (b) False
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
37. 37.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 370 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to use a new load each time is good testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.True or false: to repeat each test is good testing. (a) True (b) False

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