Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 564 · 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.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) skip writing results (d) hide a failed test
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design B (b) design A (c) design C
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) measure the same way (d) change only one thing
5. 5.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
6. 6.🧪 A paper bridge was tested three times. It held 390 g, 230 g and 340 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design A (b) design C (c) design B
9. 9.True or false: to measure the same way is poor testing. (a) False (b) True
10. 10.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
12. 12.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design C (b) design A (c) design B
14. 14.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) record every result (d) use a new load each time
15. 15.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
16. 16.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design C (c) design A
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
19. 19.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
20. 20.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
21. 21.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
22. 22.🔢 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
23. 23.🧪 A paper bridge was tested three times. It held 290 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design A (c) design C
26. 26.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
27. 27.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
28. 28.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
30. 30.True or false: to test it only once is good testing. (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 360 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 210 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
33. 33.True or false: to test it only once is poor testing. (a) True (b) False
34. 34.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) load it with coins
35. 35.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) load it with coins (d) read the challenge rules
36. 36.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
37. 37.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 220 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) skip writing results (d) change only one thing
40. 40.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing

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