Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 300 · 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.🧪 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
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
3. 3.🧪 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
4. 4.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
5. 5.True or false: to use the same load is poor testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
7. 7.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
8. 8.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) load it with coins
9. 9.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design A (b) design B (c) design C
11. 11.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) load it with coins
12. 12.True or false: to change lots at once is poor testing. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) hide a failed test (d) use a new load each time
14. 14.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
15. 15.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 210 g. What is the mean (average) load it held, in grams?
16. 16.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) measure the same way (d) repeat each test
17. 17.True or false: to repeat each test is good testing. (a) True (b) False
18. 18.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
19. 19.True or false: to use a new load each time is poor testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) hide a failed test (d) guess, do not measure
22. 22.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
23. 23.True or false: to measure the same way is good testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
25. 25.🧪 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
26. 26.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) hide a failed test (d) change only one thing
27. 27.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
28. 28.True or false: to test it only once is good testing. (a) True (b) False
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 A (b) design C (c) design B
30. 30.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
31. 31.🧪 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 C (c) design A
32. 32.True or false: to change lots at once is good testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change only one thing (d) skip writing results
34. 34.True or false: to record every result is poor testing. (a) True (b) False
35. 35.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design C (b) design A (c) design B
37. 37.True or false: to skip writing results is good testing. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) measure the same way (d) repeat each test
39. 39.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
40. 40.🧪 A paper bridge was tested three times. It held 380 g, 350 g and 320 g. What is the mean (average) load it held, in grams?

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