Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 331 · 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) change lots at once (c) test it only once (d) use a new load each time
2. 2.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design B (b) design A (c) design C
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
5. 5.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) choose and draw one (d) strengthen the weak part
6. 6.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
7. 7.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) use a new load each time
9. 9.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) change lots at once (d) record every result
10. 10.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
11. 11.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) repeat each test (d) record every result
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
14. 14.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
15. 15.True or false: to use the same load is poor testing. (a) True (b) False
16. 16.True or false: to repeat each test is good testing. (a) True (b) False
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the weakest? (a) design B (b) design A (c) design C
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design A (b) design C (c) design B
19. 19.🔢 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
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
22. 22.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
23. 23.True or false: to test it only once is poor testing. (a) False (b) True
24. 24.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 160 g. What is the mean (average) load it held, in grams?
25. 25.🔢 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) read the challenge rules
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) test it only once
27. 27.True or false: to use a new load each time is poor testing. (a) False (b) True
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 strongest? (a) design C (b) design B (c) design A
29. 29.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
30. 30.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
31. 31.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) skip writing results (d) repeat each test
32. 32.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) change only one thing (d) repeat each test
33. 33.True or false: to record every result is poor testing. (a) True (b) False
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
35. 35.True or false: to use the same load is good testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 160 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to guess, do not measure is good testing. (a) True (b) False
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the strongest? (a) design C (b) design B (c) design A
39. 39.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
40. 40.True or false: to repeat each test is poor testing. (a) True (b) False

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