Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 807 · 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.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
3. 3.True or false: to record every result is poor testing. (a) False (b) True
4. 4.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
5. 5.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change only one thing (d) use a new load each time
6. 6.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
7. 7.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
8. 8.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 340 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design A (b) design C (c) design B
10. 10.True or false: to repeat each test is good testing. (a) True (b) False
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
12. 12.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
13. 13.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) test it only once (d) change only one thing
14. 14.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
15. 15.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
16. 16.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
17. 17.🧪 A paper bridge was tested three times. It held 350 g, 340 g and 330 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 150 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to use the same load is good testing. (a) True (b) False
20. 20.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 130 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
22. 22.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 200 g, 130 g and 120 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 310 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
27. 27.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) repeat each test (d) test it only once
28. 28.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
29. 29.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.🔢 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
32. 32.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 90 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to change lots at once is good testing. (a) False (b) True
35. 35.True or false: to use the same load is poor testing. (a) True (b) False
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) choose and draw one
37. 37.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
38. 38.True or false: to change only one thing is good testing. (a) True (b) False
39. 39.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?

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