Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 725 · 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.True or false: to change only one thing is good testing. (a) False (b) True
2. 2.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) measure the same way (d) use a new load each time
4. 4.True or false: to skip writing results is good testing. (a) True (b) False
5. 5.🧪 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
6. 6.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) hide a failed test (d) repeat each test
7. 7.🧪 A paper bridge was tested three times. It held 180 g, 100 g and 260 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
9. 9.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
12. 12.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
13. 13.True or false: to change lots at once is poor testing. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) use the same load (d) test it only once
15. 15.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change only one thing (d) change lots at once
16. 16.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design B (c) design C
20. 20.🧪 A paper bridge was tested three times. It held 310 g, 180 g and 260 g. What is the mean (average) load it held, in grams?
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) sketch three ideas (d) read the challenge rules
22. 22.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
23. 23.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) use a new load each time (d) hide a failed test
24. 24.True or false: to use a new load each time is poor testing. (a) True (b) False
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design B (b) design A (c) design C
26. 26.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
28. 28.True or false: to use the same load is good testing. (a) False (b) True
29. 29.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
30. 30.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) test it only once
31. 31.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
32. 32.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 260 g. What is the mean (average) load it held, in grams?
33. 33.True or false: to use the same load is poor testing. (a) True (b) False
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design B (b) design C (c) design A
35. 35.🧪 A paper bridge was tested three times. It held 240 g, 50 g and 160 g. What is the mean (average) load it held, in grams?
36. 36.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
37. 37.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) load it with coins
38. 38.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
39. 39.True or false: to repeat each test is poor testing. (a) False (b) True
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) sketch three ideas

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