Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 987 · 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.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) use a new load each time (d) record every result
3. 3.True or false: to change only one thing is poor testing. (a) False (b) True
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
5. 5.🧪 A paper bridge was tested three times. It held 170 g, 60 g and 220 g. What is the mean (average) load it held, in grams?
6. 6.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
7. 7.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) hide a failed test (d) guess, do not measure
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the strongest? (a) design A (b) design C (c) design B
9. 9.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) read the challenge rules
11. 11.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 410 g. What is the mean (average) load it held, in grams?
12. 12.🧪 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 strongest? (a) design B (b) design C (c) design A
13. 13.🔢 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
14. 14.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) record every result (d) skip writing results
15. 15.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design B (b) design C (c) design A
17. 17.🧪 A paper bridge was tested three times. It held 260 g, 240 g and 220 g. What is the mean (average) load it held, in grams?
18. 18.🔢 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
19. 19.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) measure the same way (d) use the same load
20. 20.True or false: to guess, do not measure is good testing. (a) False (b) True
21. 21.True or false: to repeat each test is good testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 400 g, 280 g and 250 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
24. 24.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
25. 25.True or false: to guess, do not measure is poor testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
27. 27.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
28. 28.🧪 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 weakest? (a) design B (b) design A (c) design C
29. 29.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
30. 30.🧪 A paper bridge was tested three times. It held 290 g, 280 g and 270 g. What is the mean (average) load it held, in grams?
31. 31.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
32. 32.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
34. 34.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 340 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) test it only once
36. 36.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
37. 37.🧪 A paper bridge was tested three times. It held 260 g, 60 g and 160 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to skip writing results is good testing. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) measure the same way (d) skip writing results
40. 40.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part

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