Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 78 · 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 260 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
2. 2.True or false: to use the same load is good testing. (a) True (b) False
3. 3.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
4. 4.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
6. 6.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
7. 7.🧪 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 strongest? (a) design C (b) design B (c) design A
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) change only one thing (d) record every result
9. 9.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design C (b) design A (c) design B
11. 11.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 430 g. What is the mean (average) load it held, in grams?
12. 12.🧪 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
13. 13.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) test it only once (d) skip writing results
14. 14.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
15. 15.True or false: to repeat each test is good testing. (a) True (b) False
16. 16.🧪 A paper bridge was tested three times. It held 290 g, 160 g and 210 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
18. 18.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
19. 19.True or false: to skip writing results is poor testing. (a) True (b) False
20. 20.🧪 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 strongest? (a) design C (b) design B (c) design A
21. 21.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
22. 22.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
23. 23.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 130 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to skip writing results is good testing. (a) False (b) True
25. 25.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
26. 26.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change only one thing (d) change lots at once
27. 27.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
28. 28.True or false: to use a new load each time is poor testing. (a) False (b) True
29. 29.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
30. 30.True or false: to change lots at once is good testing. (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 430 g, 340 g and 250 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) use the same load (d) change lots at once
33. 33.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
34. 34.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) use a new load each time
35. 35.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
36. 36.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) use the same load (d) repeat each test
37. 37.True or false: to test it only once is poor testing. (a) False (b) True
38. 38.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 320 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
40. 40.🧪 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

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