Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 123 · 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 160 g, 90 g and 230 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
3. 3.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
4. 4.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
5. 5.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) record every result (d) change only one thing
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) sketch three ideas
7. 7.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
8. 8.🧪 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?
9. 9.True or false: to guess, do not measure is good testing. (a) True (b) False
10. 10.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) measure the same way (d) use a new load each time
13. 13.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
14. 14.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 410 g. What is the mean (average) load it held, in grams?
15. 15.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
16. 16.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
17. 17.🔢 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) sketch three ideas
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
20. 20.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
22. 22.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) repeat each test (d) use a new load each time
24. 24.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
26. 26.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 190 g. What is the mean (average) load it held, in grams?
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design C (c) design B
29. 29.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) test it only once (d) use the same load
30. 30.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
31. 31.🧪 A paper bridge was tested three times. It held 310 g, 260 g and 360 g. What is the mean (average) load it held, in grams?
32. 32.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
35. 35.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the strongest? (a) design C (b) design A (c) design B
37. 37.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) measure the same way (d) change only one thing
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design C (b) design B (c) design A
39. 39.True or false: to repeat each test is poor testing. (a) False (b) True
40. 40.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 180 g. What is the mean (average) load it held, in grams?

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