Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 121 · 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.🧪 A paper bridge was tested three times. It held 370 g, 300 g and 260 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
3. 3.True or false: to repeat each test is good testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
5. 5.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 200 g. What is the mean (average) load it held, in grams?
6. 6.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
7. 7.True or false: to skip writing results is poor testing. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) guess, do not measure (d) hide a failed test
9. 9.True or false: to change only one thing is good testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design A (c) design B
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
14. 14.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
15. 15.True or false: to record every result is poor testing. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) measure the same way (d) skip writing results
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design C (b) design B (c) design A
18. 18.True or false: to repeat each test is poor testing. (a) False (b) True
19. 19.True or false: to hide a failed test is good testing. (a) False (b) True
20. 20.True or false: to measure the same way is good testing. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) measure the same way (d) test it only once
22. 22.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) change lots at once (d) use the same load
23. 23.🧪 A paper bridge was tested three times. It held 250 g, 90 g and 110 g. What is the mean (average) load it held, in grams?
24. 24.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
25. 25.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
26. 26.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design B (b) design C (c) design A
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
29. 29.True or false: to test it only once is good testing. (a) True (b) False
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C
31. 31.🧪 A paper bridge was tested three times. It held 220 g, 100 g and 280 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to hide a failed test is poor testing. (a) False (b) True
33. 33.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
34. 34.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) sketch three ideas
35. 35.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) change only one thing (d) measure the same way
36. 36.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
37. 37.🧪 A paper bridge was tested three times. It held 360 g, 240 g and 330 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 270 g, 240 g and 270 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) choose and draw one

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