Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 285 · 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.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 230 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) read the challenge rules
3. 3.True or false: to repeat each test is good testing. (a) True (b) False
4. 4.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
5. 5.🔢 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) read the challenge rules (d) sketch three ideas
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) measure the same way (d) test it only once
8. 8.🧪 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
9. 9.🧪 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 strongest? (a) design C (b) design B (c) design A
10. 10.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) measure the same way (d) repeat each test
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) change only one thing (d) repeat each test
12. 12.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
14. 14.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 150 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to hide a failed test is good testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) load it with coins
17. 17.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the strongest? (a) design C (b) design B (c) design A
19. 19.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 210 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design A (b) design C (c) design B
21. 21.🧪 A paper bridge was tested three times. It held 240 g, 180 g and 150 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) use a new load each time (d) record every result
23. 23.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 130 g. What is the mean (average) load it held, in grams?
24. 24.🧪 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
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) hide a failed test (d) repeat each test
26. 26.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
27. 27.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) change lots at once
28. 28.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
29. 29.True or false: to use a new load each time is poor testing. (a) True (b) False
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the strongest? (a) design A (b) design C (c) design B
31. 31.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
32. 32.🧪 A paper bridge was tested three times. It held 350 g, 330 g and 340 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 340 g, 280 g and 340 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to repeat each test is poor testing. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) test it only once (d) use the same load
36. 36.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
39. 39.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins

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