Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 293 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) change lots at once (d) record every result
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
4. 4.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
5. 5.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
6. 6.True or false: to measure the same way is poor testing. (a) True (b) False
7. 7.🧪 A paper bridge was tested three times. It held 340 g, 180 g and 320 g. What is the mean (average) load it held, in grams?
8. 8.True or false: to use the same load is poor testing. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) guess, do not measure (d) repeat each test
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
11. 11.True or false: to measure the same way is good testing. (a) False (b) True
12. 12.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
13. 13.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
14. 14.True or false: to skip writing results is good testing. (a) True (b) False
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the strongest? (a) design B (b) design C (c) design A
16. 16.True or false: to change lots at once is good testing. (a) False (b) True
17. 17.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
18. 18.True or false: to change lots at once is poor testing. (a) True (b) False
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design A (b) design C (c) design B
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) change lots at once (d) guess, do not measure
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
22. 22.True or false: to guess, do not measure is poor testing. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) change lots at once (d) record every result
24. 24.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
25. 25.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
26. 26.True or false: to test it only once is poor testing. (a) False (b) True
27. 27.True or false: to hide a failed test is good testing. (a) True (b) False
28. 28.🧪 A paper bridge was tested three times. It held 190 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 230 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
31. 31.True or false: to repeat each test is good testing. (a) True (b) False
32. 32.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
33. 33.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 310 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) sketch three ideas
38. 38.True or false: to change only one thing is poor testing. (a) False (b) True
39. 39.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
40. 40.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 250 g. What is the mean (average) load it held, in grams?

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