Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 377 · 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.True or false: to repeat each test is good testing. (a) False (b) True
2. 2.True or false: to measure the same way is poor testing. (a) True (b) False
3. 3.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
4. 4.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
6. 6.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) build it with straws
7. 7.🧪 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 weakest? (a) design C (b) design B (c) design A
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) measure the same way (d) change only one thing
9. 9.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
10. 10.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
11. 11.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
12. 12.🔍 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
13. 13.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
14. 14.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
15. 15.True or false: to repeat each test is poor testing. (a) False (b) True
16. 16.🔢 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
17. 17.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
18. 18.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
19. 19.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) strengthen the weak part
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) record every result (d) hide a failed test
23. 23.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 500 g. How many more grams did it hold?
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) use the same load (d) change only one thing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design C (b) design A (c) design B
27. 27.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) change lots at once (d) use a new load each time
29. 29.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 270 g. What is the mean (average) load it held, in grams?
31. 31.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
32. 32.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) measure the same way (d) test it only once
33. 33.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
34. 34.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
35. 35.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
36. 36.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 190 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to skip writing results is poor testing. (a) True (b) False
38. 38.True or false: to change lots at once is poor testing. (a) False (b) True
39. 39.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?

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