Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 448 · 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.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
2. 2.True or false: to guess, do not measure is poor testing. (a) False (b) True
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) build it with straws
4. 4.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) change only one thing (d) measure the same way
5. 5.True or false: to skip writing results is good testing. (a) False (b) True
6. 6.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
7. 7.True or false: to measure the same way is good testing. (a) False (b) True
8. 8.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
9. 9.True or false: to repeat each test is good testing. (a) False (b) True
10. 10.🧪 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
11. 11.True or false: to repeat each test is poor testing. (a) True (b) False
12. 12.True or false: to use the same load is good testing. (a) True (b) False
13. 13.True or false: to use a new load each time is poor testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 270 g, 90 g and 180 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change only one thing (d) measure the same way
16. 16.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
17. 17.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) load it with coins
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B
19. 19.🧪 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 C (b) design A (c) design B
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C
21. 21.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
22. 22.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) test it only once
24. 24.🧪 A paper bridge was tested three times. It held 330 g, 170 g and 280 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
26. 26.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
27. 27.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
29. 29.True or false: to record every result is poor testing. (a) False (b) True
30. 30.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
31. 31.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) measure the same way (d) repeat each test
32. 32.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) change only one thing (d) repeat each test
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design B (b) design C (c) design A
35. 35.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
36. 36.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
38. 38.True or false: to change lots at once is poor testing. (a) False (b) True
39. 39.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) hide a failed test (d) measure the same way

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