Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 98 · 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 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design C (b) design A (c) design B
2. 2.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
3. 3.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
4. 4.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
5. 5.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
6. 6.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) use a new load each time (d) use the same load
9. 9.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) use the same load (d) record every result
11. 11.True or false: to hide a failed test is poor testing. (a) True (b) False
12. 12.True or false: to skip writing results is good testing. (a) False (b) True
13. 13.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 280 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design B (b) design A (c) design C
16. 16.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
17. 17.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
18. 18.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) test it only once
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design C (b) design B (c) design A
20. 20.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design C (b) design A (c) design B
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
23. 23.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
24. 24.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) sketch three ideas
25. 25.🧪 A paper bridge was tested three times. It held 350 g, 280 g and 210 g. What is the mean (average) load it held, in grams?
26. 26.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
28. 28.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
29. 29.True or false: to measure the same way is good testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 230 g. What is the mean (average) load it held, in grams?
31. 31.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
32. 32.🧪 A paper bridge was tested three times. It held 280 g, 90 g and 170 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
34. 34.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design C (b) design A (c) design B
36. 36.True or false: to change only one thing is poor testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 370 g, 250 g and 280 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 350 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) skip writing results (d) guess, do not measure
40. 40.True or false: to hide a failed test is good testing. (a) True (b) False

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