Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 502 · 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.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
2. 2.True or false: to test it only once is good testing. (a) True (b) False
3. 3.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
4. 4.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
5. 5.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
7. 7.🧪 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
8. 8.True or false: to guess, do not measure is poor testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
10. 10.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
11. 11.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
12. 12.True or false: to record every result is poor testing. (a) True (b) False
13. 13.🔍 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
14. 14.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
15. 15.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
18. 18.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) use a new load each time (d) repeat each test
19. 19.True or false: to change lots at once is poor testing. (a) False (b) True
20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
21. 21.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) skip writing results (d) change only one thing
23. 23.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) sketch three ideas
24. 24.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
25. 25.🧪 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
26. 26.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 350 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) hide a failed test
29. 29.True or false: to record every result is good testing. (a) True (b) False
30. 30.🧪 A paper bridge was tested three times. It held 370 g, 320 g and 300 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) record every result (d) hide a failed test
32. 32.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) change lots at once
35. 35.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 300 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
38. 38.True or false: to repeat each test is poor testing. (a) False (b) True
39. 39.True or false: to guess, do not measure is good testing. (a) True (b) False
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design B (b) design A (c) design C

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