Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 699 · 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) poor testing (b) good testing
2. 2.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) change only one thing (d) use the same load
3. 3.🧪 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 weakest? (a) design C (b) design A (c) design B
4. 4.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
5. 5.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
6. 6.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
7. 7.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
8. 8.True or false: to hide a failed test is poor testing. (a) True (b) False
9. 9.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) use a new load each time (d) guess, do not measure
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design C (b) design B (c) design A
12. 12.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
13. 13.True or false: to hide a failed test is good testing. (a) False (b) True
14. 14.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
15. 15.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
16. 16.🧪 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 strongest? (a) design B (b) design A (c) design C
17. 17.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
18. 18.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) load it with coins (c) choose and draw one (d) strengthen the weak part
19. 19.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
20. 20.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
21. 21.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
23. 23.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) skip writing results (d) change only one thing
24. 24.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) change only one thing (d) repeat each test
25. 25.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) repeat each test (d) measure the same way
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) use a new load each time (d) change lots at once
27. 27.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
29. 29.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
30. 30.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) change only one thing (d) use the same load
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
32. 32.🔢 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
33. 33.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
34. 34.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 210 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to skip writing results is poor testing. (a) True (b) False
36. 36.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
38. 38.True or false: to change only one thing is poor testing. (a) True (b) False
39. 39.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?

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