Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 517 · 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.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
2. 2.🧪 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 A (c) design C
3. 3.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) measure the same way (d) change only one thing
4. 4.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 170 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
6. 6.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
7. 7.🧪 A paper bridge was tested three times. It held 360 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
10. 10.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) use a new load each time (d) repeat each test
11. 11.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design C (b) design B (c) design A
14. 14.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
15. 15.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
16. 16.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
17. 17.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design A (c) design C
19. 19.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
20. 20.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) change lots at once (d) change only one thing
21. 21.True or false: to repeat each test is good testing. (a) True (b) False
22. 22.🔍 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
23. 23.🧪 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 weakest? (a) design B (b) design C (c) design A
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design A (b) design B (c) design C
25. 25.True or false: to use the same load is good testing. (a) False (b) True
26. 26.True or false: to test it only once is good testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 220 g, 200 g and 240 g. What is the mean (average) load it held, in grams?
28. 28.🔢 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) choose and draw one (d) strengthen the weak part
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C
30. 30.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) read the challenge rules
31. 31.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) choose and draw one
33. 33.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
34. 34.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 340 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
36. 36.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
37. 37.True or false: to use a new load each time is poor testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 230 g, 60 g and 190 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
40. 40.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part

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