Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 492 · 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 comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
2. 2.True or false: to skip writing results is good testing. (a) False (b) True
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the strongest? (a) design C (b) design A (c) design B
4. 4.True or false: to use the same load is poor testing. (a) False (b) True
5. 5.True or false: to record every result is poor testing. (a) True (b) False
6. 6.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) repeat each test (d) hide a failed test
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) test it only once
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 160 g and 230 g. What is the mean (average) load it held, in grams?
10. 10.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
11. 11.True or false: to test it only once is good testing. (a) True (b) False
12. 12.True or false: to change only one thing is good testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design B (c) design A
15. 15.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) record every result (d) change lots at once
16. 16.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
18. 18.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
20. 20.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
21. 21.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
22. 22.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
23. 23.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
24. 24.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) change lots at once (d) record every result
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
26. 26.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
29. 29.True or false: to use a new load each time is good testing. (a) True (b) False
30. 30.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
31. 31.True or false: to record every result is good testing. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) skip writing results (d) record every result
33. 33.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
36. 36.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 390 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
38. 38.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change lots at once (d) change only one thing
39. 39.🧪 A paper bridge was tested three times. It held 320 g, 150 g and 190 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 350 g, 290 g and 230 g. What is the mean (average) load it held, in grams?

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