Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 477 · 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.🧪 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
2. 2.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
3. 3.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
4. 4.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
5. 5.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) measure the same way (d) skip writing results
7. 7.True or false: to guess, do not measure is poor testing. (a) True (b) False
8. 8.True or false: to measure the same way is good testing. (a) False (b) True
9. 9.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) repeat each test (d) guess, do not measure
11. 11.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design B (b) design A (c) design C
13. 13.🔢 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
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design C (b) design B (c) design A
15. 15.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to record every result is poor testing. (a) False (b) True
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the strongest? (a) design A (b) design C (c) design B
18. 18.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design B (b) design A (c) design C
20. 20.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
21. 21.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
22. 22.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) hide a failed test (d) change only one thing
23. 23.True or false: to measure the same way is poor testing. (a) True (b) False
24. 24.True or false: to record every result is good testing. (a) True (b) False
25. 25.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
27. 27.🧪 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 weakest? (a) design A (b) design C (c) design B
28. 28.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
29. 29.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
31. 31.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
32. 32.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 280 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 290 g, 250 g and 210 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 180 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design C (b) design A (c) design B
37. 37.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
39. 39.True or false: to test it only once is poor testing. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) use the same load (d) measure the same way

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