Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 188 · 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.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) record every result (d) guess, do not measure
2. 2.🧪 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 weakest? (a) design C (b) design A (c) design B
3. 3.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design C (b) design A (c) design B
5. 5.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) measure the same way (d) change only one thing
6. 6.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
7. 7.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) measure the same way (d) change lots at once
8. 8.🧪 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
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🧪 A paper bridge was tested three times. It held 380 g, 230 g and 380 g. What is the mean (average) load it held, in grams?
11. 11.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
12. 12.True or false: to skip writing results is poor testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
14. 14.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) load it with coins
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) hide a failed test
16. 16.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
17. 17.🔢 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
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
19. 19.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
20. 20.True or false: to guess, do not measure is poor testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 290 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design C (b) design B (c) design A
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) build it with straws
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design A (b) design C (c) design B
28. 28.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) guess, do not measure (d) hide a failed test
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the strongest? (a) design A (b) design C (c) design B
30. 30.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
31. 31.True or false: to change lots at once is good testing. (a) False (b) True
32. 32.🔢 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
33. 33.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
34. 34.True or false: to repeat each test is good testing. (a) True (b) False
35. 35.True or false: to measure the same way is good testing. (a) False (b) True
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) test it only once (d) measure the same way
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design A (b) design C (c) design B
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 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B

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