Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 916 · 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.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
3. 3.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) change only one thing (d) use the same load
5. 5.True or false: to record every result is poor testing. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) skip writing results (d) guess, do not measure
7. 7.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
9. 9.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
10. 10.🔢 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
11. 11.🧪 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 C (b) design B (c) design A
12. 12.🧪 A paper bridge was tested three times. It held 370 g, 330 g and 350 g. What is the mean (average) load it held, in grams?
13. 13.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
14. 14.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
15. 15.True or false: to guess, do not measure is good testing. (a) False (b) True
16. 16.True or false: to skip writing results is good testing. (a) True (b) False
17. 17.🧪 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
18. 18.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
19. 19.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
20. 20.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) guess, do not measure (d) test it only once
21. 21.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
22. 22.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 220 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design C (b) design A (c) design B
24. 24.True or false: to hide a failed test is poor testing. (a) False (b) True
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.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) record every result (d) repeat each test
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
28. 28.True or false: to hide a failed test is good testing. (a) False (b) True
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the strongest? (a) design B (b) design C (c) design A
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the strongest? (a) design B (b) design C (c) design A
31. 31.True or false: to measure the same way is poor testing. (a) True (b) False
32. 32.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
33. 33.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) change lots at once (d) test it only once
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) skip writing results (d) change only one thing
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
38. 38.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
39. 39.True or false: to test it only once is good testing. (a) True (b) False
40. 40.True or false: to change lots at once is poor testing. (a) False (b) True

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