Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 829 · 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.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
2. 2.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 230 g. What is the mean (average) load it held, in grams?
3. 3.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
4. 4.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) skip writing results (d) change only one thing
5. 5.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) read the challenge rules
7. 7.True or false: to measure the same way is poor testing. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) use a new load each time (d) test it only once
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
11. 11.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
12. 12.True or false: to repeat each test is good testing. (a) True (b) False
13. 13.True or false: to guess, do not measure is poor testing. (a) False (b) True
14. 14.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design A (b) design C (c) design B
16. 16.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
17. 17.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) measure the same way (d) use the same load
18. 18.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
20. 20.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) hide a failed test (d) change only one thing
21. 21.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
22. 22.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
23. 23.🔢 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
24. 24.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
25. 25.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 220 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) guess, do not measure (d) record every result
27. 27.True or false: to test it only once is good testing. (a) True (b) False
28. 28.🧪 A paper bridge was tested three times. It held 340 g, 210 g and 290 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design C (b) design A (c) design B
30. 30.🧪 A paper bridge was tested three times. It held 250 g, 240 g and 230 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) measure the same way (d) record every result
32. 32.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to skip writing results is poor testing. (a) True (b) False
35. 35.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) read the challenge rules
36. 36.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 180 g, 70 g and 230 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
39. 39.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
40. 40.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?

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