Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 590 · 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.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) hide a failed test (d) record every result
2. 2.🧪 A paper bridge was tested three times. It held 410 g, 290 g and 260 g. What is the mean (average) load it held, in grams?
3. 3.🔢 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
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) build it with straws
5. 5.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
6. 6.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 170 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 240 g. What is the mean (average) load it held, in grams?
8. 8.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) test it only once (d) use the same load
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
13. 13.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
14. 14.True or false: to use the same load is poor testing. (a) True (b) False
15. 15.🧪 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
16. 16.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
17. 17.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 330 g. What is the mean (average) load it held, in grams?
18. 18.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
20. 20.True or false: to repeat each test is poor testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design A (b) design C (c) design B
22. 22.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 270 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 170 g. What is the mean (average) load it held, in grams?
26. 26.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
27. 27.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
28. 28.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 80 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) use a new load each time (d) repeat each test
30. 30.True or false: to change lots at once is good testing. (a) True (b) False
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the weakest? (a) design B (b) design A (c) design C
32. 32.🧪 A paper bridge was tested three times. It held 220 g, 80 g and 240 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
35. 35.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) use the same load (d) repeat each test
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) guess, do not measure (d) change only one thing
37. 37.🧪 A paper bridge was tested three times. It held 400 g, 260 g and 390 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C

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