Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 780 · 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.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) load it with coins
3. 3.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
4. 4.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) sketch three ideas
6. 6.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
8. 8.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
9. 9.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
10. 10.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
11. 11.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
12. 12.🧪 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 B (b) design C (c) design A
13. 13.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
14. 14.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) choose and draw one
16. 16.🔢 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
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) build it with straws
18. 18.🔍 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
19. 19.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
20. 20.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
21. 21.True or false: to repeat each test is poor testing. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
23. 23.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
25. 25.True or false: to skip writing results is good testing. (a) False (b) True
26. 26.True or false: to use a new load each time is good testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
28. 28.True or false: to hide a failed test is poor testing. (a) True (b) False
29. 29.True or false: to measure the same way is poor testing. (a) True (b) False
30. 30.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
31. 31.True or false: to use the same load is good testing. (a) False (b) True
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design A (b) design C (c) design B
33. 33.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 230 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) use the same load (d) use a new load each time
35. 35.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
37. 37.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
38. 38.True or false: to measure the same way is good testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 410 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing

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