Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 973 · 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 skip writing results? (a) good testing (b) poor testing
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) hide a failed test (d) change lots at once
3. 3.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
4. 4.🔢 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
5. 5.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 350 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
7. 7.True or false: to change only one thing is poor testing. (a) False (b) True
8. 8.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
9. 9.🧪 A paper bridge was tested three times. It held 240 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) change lots at once (d) use the same load
12. 12.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
13. 13.True or false: to use the same load is good testing. (a) False (b) True
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design A (b) design B (c) design C
15. 15.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
17. 17.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
18. 18.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
19. 19.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 220 g, 100 g and 130 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
22. 22.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
23. 23.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) use a new load each time (d) repeat each test
24. 24.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) load it with coins
26. 26.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
27. 27.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) measure the same way (d) repeat each test
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the weakest? (a) design B (b) design C (c) design A
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the weakest? (a) design A (b) design C (c) design B
30. 30.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) change only one thing (d) hide a failed test
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design B (b) design C (c) design A
32. 32.True or false: to repeat each test is poor testing. (a) False (b) True
33. 33.True or false: to guess, do not measure is good testing. (a) False (b) True
34. 34.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) build it with straws
36. 36.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
37. 37.True or false: to skip writing results is good testing. (a) True (b) False
38. 38.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
39. 39.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) change lots at once (d) guess, do not measure
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) guess, do not measure (d) change only one thing

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