Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 601 · 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 200 g, 150 g and 160 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
3. 3.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) hide a failed test (d) guess, do not measure
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
6. 6.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
7. 7.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
8. 8.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
9. 9.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
10. 10.🧪 A paper bridge was tested three times. It held 340 g, 240 g and 440 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) repeat each test (d) use a new load each time
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) read the challenge rules
13. 13.🧪 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?
14. 14.True or false: to hide a failed test is good testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 430 g, 270 g and 290 g. What is the mean (average) load it held, in grams?
16. 16.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
17. 17.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
18. 18.True or false: to test it only once is good testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
20. 20.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
21. 21.True or false: to measure the same way is poor testing. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
23. 23.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
24. 24.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
25. 25.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
26. 26.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
27. 27.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) use a new load each time
28. 28.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
30. 30.True or false: to test it only once is poor testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 400 g, 260 g and 270 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
33. 33.🔢 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
34. 34.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
36. 36.True or false: to measure the same way is good testing. (a) False (b) True
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design C (b) design B (c) design A
39. 39.True or false: to change lots at once is poor testing. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) skip writing results (d) record every result

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