Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 81 · 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.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) sketch three ideas
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) read the challenge rules
3. 3.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
4. 4.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
5. 5.True or false: to guess, do not measure is good testing. (a) True (b) False
6. 6.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
7. 7.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
8. 8.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
9. 9.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
10. 10.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) repeat each test (d) record every result
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design C (b) design B (c) design A
13. 13.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
14. 14.True or false: to use a new load each time is good testing. (a) True (b) False
15. 15.True or false: to measure the same way is poor testing. (a) True (b) False
16. 16.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) measure the same way (d) record every result
18. 18.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
19. 19.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
22. 22.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use the same load (d) guess, do not measure
24. 24.🧪 A paper bridge was tested three times. It held 310 g, 170 g and 300 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
26. 26.🧪 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 weakest? (a) design B (b) design C (c) design A
27. 27.True or false: to record every result is good testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 290 g, 110 g and 170 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 210 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
30. 30.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
32. 32.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
33. 33.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
34. 34.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
35. 35.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) use a new load each time (d) test it only once
36. 36.True or false: to repeat each test is poor testing. (a) True (b) False
37. 37.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 170 g, 130 g and 210 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
40. 40.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?

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