Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 685 · 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 “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) load it with coins (d) read the challenge rules
2. 2.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
3. 3.🧪 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
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
5. 5.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
6. 6.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
7. 7.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) measure the same way (d) test it only once
9. 9.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 380 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 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design B (b) design C (c) design A
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) measure the same way (d) use a new load each time
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
13. 13.True or false: to measure the same way is poor testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) use a new load each time (d) test it only once
15. 15.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
16. 16.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
17. 17.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
18. 18.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
19. 19.🧪 A paper bridge was tested three times. It held 210 g, 180 g and 210 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) skip writing results (d) guess, do not measure
21. 21.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
22. 22.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) guess, do not measure
24. 24.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) hide a failed test (d) repeat each test
25. 25.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
26. 26.True or false: to change lots at once is good testing. (a) False (b) True
27. 27.True or false: to test it only once is good testing. (a) True (b) False
28. 28.🧪 A paper bridge was tested three times. It held 340 g, 300 g and 290 g. What is the mean (average) load it held, in grams?
29. 29.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
30. 30.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
32. 32.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
34. 34.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the strongest? (a) design A (b) design C (c) design B
36. 36.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 310 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to hide a failed test is poor testing. (a) True (b) False
38. 38.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing

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