Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 556 · 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 test it only once? (a) good testing (b) poor testing
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design C (b) design B (c) design A
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the weakest? (a) design B (b) design A (c) design C
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) change lots at once (d) repeat each test
5. 5.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
8. 8.True or false: to use the same load is poor testing. (a) False (b) True
9. 9.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
10. 10.True or false: to change lots at once is good testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
13. 13.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
14. 14.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
16. 16.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
17. 17.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
18. 18.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) guess, do not measure (d) repeat each test
19. 19.🧪 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 B (c) design C
20. 20.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
21. 21.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) sketch three ideas
23. 23.True or false: to repeat each test is good testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 360 g, 340 g and 320 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 140 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 390 g, 330 g and 270 g. What is the mean (average) load it held, in grams?
28. 28.🧪 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 A (b) design C (c) design B
29. 29.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
30. 30.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
31. 31.🧪 A paper bridge was tested three times. It held 380 g, 330 g and 310 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to test it only once is poor testing. (a) True (b) False
33. 33.True or false: to repeat each test is poor testing. (a) False (b) True
34. 34.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) hide a failed test (d) change lots at once
36. 36.True or false: to measure the same way is good testing. (a) False (b) True
37. 37.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
38. 38.🧪 A paper bridge was tested three times. It held 230 g, 90 g and 220 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the strongest? (a) design C (b) design A (c) design B
40. 40.🧪 A paper bridge was tested three times. It held 240 g, 180 g and 270 g. What is the mean (average) load it held, in grams?

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