Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 949 · 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, which is the FIRST step? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) load it with coins
2. 2.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) skip writing results (d) test it only once
3. 3.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
4. 4.🧪 A paper bridge was tested three times. It held 250 g, 60 g and 140 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the weakest? (a) design A (b) design C (c) design B
6. 6.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
7. 7.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) measure the same way
9. 9.True or false: to repeat each test is good testing. (a) False (b) True
10. 10.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
11. 11.True or false: to change only one thing is good testing. (a) True (b) False
12. 12.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
14. 14.True or false: to skip writing results is good testing. (a) False (b) True
15. 15.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
17. 17.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design A (b) design B (c) design C
19. 19.🧪 A paper bridge was tested three times. It held 320 g, 290 g and 320 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
21. 21.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design B (b) design A (c) design C
23. 23.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
24. 24.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
25. 25.🧪 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
26. 26.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
27. 27.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
29. 29.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
30. 30.True or false: to record every result is good testing. (a) True (b) False
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the weakest? (a) design A (b) design B (c) design C
33. 33.True or false: to test it only once is good testing. (a) False (b) True
34. 34.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
35. 35.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
36. 36.🧪 A paper bridge was tested three times. It held 320 g, 130 g and 210 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 300 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C

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