Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 516 · 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.True or false: to change only one thing is poor testing. (a) False (b) True
3. 3.True or false: to skip writing results is good testing. (a) True (b) False
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design A (b) design B (c) design C
5. 5.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) choose and draw one
6. 6.True or false: to repeat each test is good testing. (a) True (b) False
7. 7.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
8. 8.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) load it with coins
10. 10.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
11. 11.True or false: to measure the same way is good testing. (a) False (b) True
12. 12.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) test it only once (d) change only one thing
15. 15.True or false: to guess, do not measure is poor testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
17. 17.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
18. 18.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
19. 19.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
20. 20.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 250 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to use the same load is good testing. (a) True (b) False
22. 22.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
23. 23.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
24. 24.True or false: to repeat each test is poor testing. (a) False (b) True
25. 25.True or false: to use the same load is poor testing. (a) True (b) False
26. 26.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
27. 27.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) record every result (d) measure the same way
28. 28.🔢 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
29. 29.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) repeat each test (d) hide a failed test
31. 31.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
32. 32.True or false: to change only one thing is good testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design C (b) design B (c) design A
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🧪 A paper bridge was tested three times. It held 330 g, 330 g and 330 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
38. 38.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
39. 39.True or false: to measure the same way is poor testing. (a) False (b) True
40. 40.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product

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