Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 240 · 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 record every result? (a) good testing (b) poor testing
2. 2.🧪 A paper bridge was tested three times. It held 340 g, 320 g and 360 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to hide a failed test is poor testing. (a) False (b) True
4. 4.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 290 g. What is the mean (average) load it held, in grams?
5. 5.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
6. 6.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
7. 7.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design B (b) design C (c) design A
10. 10.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
11. 11.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
12. 12.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
13. 13.🧪 A paper bridge was tested three times. It held 340 g, 190 g and 310 g. What is the mean (average) load it held, in grams?
14. 14.🧪 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 A (c) design B
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design C (b) design B (c) design A
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
17. 17.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
18. 18.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) strengthen the weak part
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
21. 21.🧪 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 A (b) design C (c) design B
22. 22.True or false: to skip writing results is good testing. (a) True (b) False
23. 23.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
25. 25.True or false: to record every result is poor testing. (a) True (b) False
26. 26.🧪 A paper bridge was tested three times. It held 310 g, 280 g and 340 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
29. 29.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) use the same load (d) measure the same way
30. 30.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 260 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to hide a failed test is good testing. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) hide a failed test (d) repeat each test
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change lots at once (d) measure the same way
34. 34.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 290 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
37. 37.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
38. 38.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change only one thing (d) use a new load each time
39. 39.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
40. 40.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?

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