Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 672 · 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 260 g, 190 g and 240 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) choose and draw one
3. 3.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
5. 5.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
6. 6.🧪 A paper bridge was tested three times. It held 270 g, 90 g and 180 g. What is the mean (average) load it held, in grams?
7. 7.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
8. 8.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
10. 10.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) use the same load (d) change lots at once
11. 11.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
12. 12.True or false: to guess, do not measure is poor testing. (a) True (b) False
13. 13.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 370 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) test it only once (d) record every result
15. 15.True or false: to measure the same way is poor testing. (a) False (b) True
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the weakest? (a) design A (b) design C (c) design B
17. 17.True or false: to use the same load is poor testing. (a) True (b) False
18. 18.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
19. 19.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 280 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
21. 21.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design B (b) design C (c) design A
23. 23.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
24. 24.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
26. 26.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 190 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
28. 28.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
29. 29.True or false: to use the same load is good testing. (a) False (b) True
30. 30.True or false: to measure the same way is good testing. (a) True (b) False
31. 31.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design A (b) design B (c) design C
33. 33.True or false: to guess, do not measure is good testing. (a) False (b) True
34. 34.True or false: to change only one thing is poor testing. (a) True (b) False
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
36. 36.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use a new load each time (d) use the same load
37. 37.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
39. 39.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
40. 40.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) skip writing results

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