Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 554 · 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.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
2. 2.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
3. 3.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 290 g. What is the mean (average) load it held, in grams?
4. 4.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 220 g, 100 g and 280 g. What is the mean (average) load it held, in grams?
6. 6.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
7. 7.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) change lots at once (d) record every result
8. 8.True or false: to repeat each test is good testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
11. 11.True or false: to record every result is poor testing. (a) False (b) True
12. 12.🧪 A paper bridge was tested three times. It held 390 g, 290 g and 370 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 260 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) skip writing results
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
16. 16.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) change only one thing (d) use the same load
17. 17.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the strongest? (a) design C (b) design B (c) design A
19. 19.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
20. 20.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
21. 21.True or false: to measure the same way is good testing. (a) True (b) False
22. 22.True or false: to change only one thing is poor testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) use the same load (d) hide a failed test
24. 24.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
26. 26.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
28. 28.True or false: to measure the same way is poor testing. (a) False (b) True
29. 29.True or false: to record every result is good testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) hide a failed test (d) measure the same way
31. 31.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
32. 32.True or false: to repeat each test is poor testing. (a) True (b) False
33. 33.True or false: to guess, do not measure is poor testing. (a) True (b) False
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design C (b) design B (c) design A
35. 35.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
36. 36.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 330 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) measure the same way (d) record every result
38. 38.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
39. 39.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) use a new load each time (d) hide a failed test
40. 40.True or false: to change only one thing is good testing. (a) True (b) False

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