Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 136 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design A (b) design C (c) design B
2. 2.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
3. 3.True or false: to guess, do not measure is poor testing. (a) False (b) True
4. 4.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
5. 5.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
6. 6.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
7. 7.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
8. 8.True or false: to repeat each test is good testing. (a) True (b) False
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design A (b) design C (c) design B
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
13. 13.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
15. 15.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) skip writing results (d) measure the same way
19. 19.True or false: to skip writing results is good testing. (a) False (b) True
20. 20.🧪 A paper bridge was tested three times. It held 180 g, 130 g and 230 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.🧪 A paper bridge was tested three times. It held 400 g, 350 g and 300 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
25. 25.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) change lots at once (d) use a new load each time
26. 26.True or false: to measure the same way is good testing. (a) False (b) True
27. 27.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
29. 29.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) change lots at once (d) test it only once
30. 30.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
32. 32.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) build it with straws
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.🧪 A paper bridge was tested three times. It held 380 g, 330 g and 310 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
36. 36.🔢 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
37. 37.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
39. 39.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
40. 40.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) skip writing results (d) use a new load each time

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