Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 690 · 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.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
2. 2.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) repeat each test (d) hide a failed test
3. 3.True or false: to hide a failed test is poor testing. (a) False (b) True
4. 4.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
5. 5.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
6. 6.🧪 A paper bridge was tested three times. It held 440 g, 240 g and 340 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to change lots at once is poor testing. (a) True (b) False
8. 8.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
9. 9.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
10. 10.True or false: to change only one thing is poor testing. (a) True (b) False
11. 11.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
12. 12.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design C (b) design B (c) design A
14. 14.True or false: to measure the same way is poor testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
16. 16.🧪 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?
17. 17.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
18. 18.True or false: to use the same load is poor testing. (a) True (b) False
19. 19.True or false: to change lots at once is good testing. (a) True (b) False
20. 20.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
21. 21.🔢 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
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design A (b) design B (c) design C
23. 23.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
24. 24.🧪 A paper bridge was tested three times. It held 270 g, 230 g and 280 g. What is the mean (average) load it held, in grams?
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) skip writing results
27. 27.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 220 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
29. 29.🧪 A paper bridge was tested three times. It held 200 g, 90 g and 220 g. What is the mean (average) load it held, in grams?
30. 30.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
31. 31.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) sketch three ideas
33. 33.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
34. 34.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
35. 35.True or false: to measure the same way is good testing. (a) True (b) False
36. 36.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
38. 38.True or false: to hide a failed test is good testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 290 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to skip writing results is good testing. (a) True (b) False

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