Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 550 · 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.True or false: to change only one thing is good testing. (a) True (b) False
2. 2.🧪 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 C (b) design A (c) design B
3. 3.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) change lots at once (d) measure the same way
4. 4.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
6. 6.True or false: to measure the same way is poor testing. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) guess, do not measure
8. 8.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
9. 9.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
10. 10.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) use the same load (d) measure the same way
11. 11.True or false: to measure the same way is good testing. (a) False (b) True
12. 12.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
13. 13.True or false: to change lots at once is poor testing. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) change lots at once (d) use the same load
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
16. 16.🧪 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?
17. 17.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) skip writing results (d) change only one thing
18. 18.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the strongest? (a) design C (b) design A (c) design B
20. 20.True or false: to skip writing results is poor testing. (a) False (b) True
21. 21.🧪 A paper bridge was tested three times. It held 330 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to repeat each test is good testing. (a) True (b) False
23. 23.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
24. 24.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design B (b) design A (c) design C
26. 26.True or false: to repeat each test is poor testing. (a) True (b) False
27. 27.True or false: to test it only once is poor testing. (a) True (b) False
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the strongest? (a) design C (b) design A (c) design B
29. 29.🔢 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
30. 30.True or false: to use a new load each time is poor testing. (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 360 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) measure the same way (d) use the same load
33. 33.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 140 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to skip writing results is good testing. (a) True (b) False
35. 35.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 250 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 130 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
39. 39.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
40. 40.🧪 A paper bridge was tested three times. It held 350 g, 330 g and 310 g. What is the mean (average) load it held, in grams?

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