Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 897 · 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.True or false: to hide a failed test is poor testing. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) repeat each test (d) use the same load
3. 3.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
4. 4.True or false: to repeat each test is good testing. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) hide a failed test (d) use the same load
6. 6.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 230 g. What is the mean (average) load it held, in grams?
7. 7.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
8. 8.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 220 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 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design C (b) design A (c) design B
10. 10.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) strengthen the weak part
11. 11.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) test it only once (d) measure the same way
12. 12.True or false: to measure the same way is poor testing. (a) True (b) False
13. 13.True or false: to change lots at once is poor testing. (a) False (b) True
14. 14.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
15. 15.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
16. 16.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the strongest? (a) design B (b) design A (c) design C
18. 18.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
19. 19.True or false: to repeat each test is poor testing. (a) True (b) False
20. 20.🧪 A paper bridge was tested three times. It held 420 g, 310 g and 320 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
23. 23.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
24. 24.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) measure the same way (d) use a new load each time
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the weakest? (a) design B (b) design A (c) design C
28. 28.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
29. 29.True or false: to test it only once is good testing. (a) True (b) False
30. 30.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 200 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) guess, do not measure (d) record every result
32. 32.True or false: to guess, do not measure is good testing. (a) True (b) False
33. 33.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
34. 34.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 60 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
36. 36.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 220 g, 130 g and 190 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to change only one thing is good testing. (a) False (b) True
39. 39.🧪 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 C (b) design B (c) design A
40. 40.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas

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