Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 3 · 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.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
2. 2.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
5. 5.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) hide a failed test (d) use a new load each time
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) build it with straws
7. 7.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 150 g. What is the mean (average) load it held, in grams?
8. 8.True or false: to change only one thing is good testing. (a) False (b) True
9. 9.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
10. 10.True or false: to change lots at once is good testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
12. 12.True or false: to skip writing results is poor testing. (a) True (b) False
13. 13.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
14. 14.🧪 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 A (c) design B
15. 15.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 60 g. What is the mean (average) load it held, in grams?
16. 16.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) measure the same way (d) change only one thing
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
19. 19.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 170 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 250 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) change lots at once (d) use a new load each time
22. 22.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
24. 24.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
25. 25.True or false: to hide a failed test is poor testing. (a) False (b) True
26. 26.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 190 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 200 g, 100 g and 270 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to guess, do not measure is poor testing. (a) False (b) True
29. 29.🧪 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?
30. 30.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) hide a failed test (d) change lots at once
33. 33.True or false: to repeat each test is poor testing. (a) False (b) True
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.🔢 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
36. 36.🧪 A paper bridge was tested three times. It held 280 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
38. 38.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.True or false: to test it only once is good testing. (a) True (b) False

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