Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 626 · 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.🧪 A paper bridge was tested three times. It held 320 g, 270 g and 370 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
4. 4.True or false: to use the same load is good testing. (a) False (b) True
5. 5.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 240 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
7. 7.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
8. 8.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
9. 9.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
10. 10.True or false: to change only one thing is poor testing. (a) False (b) True
11. 11.True or false: to repeat each test is good testing. (a) True (b) False
12. 12.🧪 A paper bridge was tested three times. It held 420 g, 310 g and 320 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to measure the same way is good testing. (a) True (b) False
14. 14.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
15. 15.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
16. 16.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
17. 17.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
19. 19.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
20. 20.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design B (b) design A (c) design C
22. 22.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
23. 23.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) read the challenge rules
25. 25.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change only one thing (d) use the same load
26. 26.True or false: to guess, do not measure is good testing. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) measure the same way (d) hide a failed test
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) skip writing results (d) hide a failed test
29. 29.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
30. 30.🔢 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
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
32. 32.True or false: to record every result is poor testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) change only one thing (d) use the same load
34. 34.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 160 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
38. 38.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) test it only once (d) skip writing results
39. 39.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 220 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 250 g, 180 g and 320 g. What is the mean (average) load it held, in grams?

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