Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 940 · 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.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
2. 2.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
3. 3.🧪 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
4. 4.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
5. 5.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
6. 6.🧪 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
7. 7.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
8. 8.True or false: to use the same load is poor testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A
11. 11.True or false: to test it only once is poor testing. (a) False (b) True
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) choose and draw one
13. 13.🧪 A paper bridge was tested three times. It held 240 g, 90 g and 240 g. What is the mean (average) load it held, in grams?
14. 14.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
16. 16.True or false: to hide a failed test is good testing. (a) True (b) False
17. 17.True or false: to measure the same way is poor testing. (a) True (b) False
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the strongest? (a) design B (b) design A (c) design C
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) test it only once (d) measure the same way
21. 21.True or false: to hide a failed test is poor testing. (a) False (b) True
22. 22.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
23. 23.True or false: to change only one thing is good testing. (a) True (b) False
24. 24.True or false: to repeat each test is good testing. (a) False (b) True
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.🧪 A paper bridge was tested three times. It held 390 g, 250 g and 260 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
28. 28.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) repeat each test (d) change only one thing
29. 29.True or false: to skip writing results is good testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) record every result (d) change lots at once
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) sketch three ideas
32. 32.True or false: to guess, do not measure is poor testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) sketch three ideas
34. 34.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 230 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.True or false: to measure the same way is good testing. (a) False (b) True
37. 37.True or false: to use a new load each time is good testing. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) measure the same way (d) repeat each test
39. 39.🧪 A paper bridge was tested three times. It held 330 g, 310 g and 350 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) change lots at once (d) measure the same way

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