Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 135 · 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.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) test it only once (d) hide a failed test
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
3. 3.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) load it with coins
5. 5.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
6. 6.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
7. 7.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
8. 8.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
9. 9.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use a new load each time (d) use the same load
10. 10.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
12. 12.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) measure the same way (d) change lots at once
13. 13.🧪 A paper bridge was tested three times. It held 370 g, 250 g and 370 g. What is the mean (average) load it held, in grams?
14. 14.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) build it with straws
15. 15.🧪 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 B (b) design C (c) design A
16. 16.🧪 A paper bridge was tested three times. It held 370 g, 300 g and 320 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design B (b) design A (c) design C
18. 18.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) hide a failed test
19. 19.True or false: to test it only once is good testing. (a) False (b) True
20. 20.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
22. 22.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 230 g. What is the mean (average) load it held, in grams?
24. 24.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 200 g. What is the mean (average) load it held, in grams?
25. 25.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
26. 26.🧪 A paper bridge was tested three times. It held 430 g, 260 g and 360 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
29. 29.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 410 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) measure the same way (d) skip writing results
32. 32.🧪 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 C (b) design B (c) design A
33. 33.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
35. 35.🧪 A paper bridge was tested three times. It held 260 g, 220 g and 270 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
37. 37.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) hide a failed test (d) change lots at once
39. 39.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
40. 40.True or false: to repeat each test is poor testing. (a) True (b) False

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