Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 144 · 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.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
2. 2.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
3. 3.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
4. 4.True or false: to use the same load is poor testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
6. 6.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
7. 7.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) measure the same way (d) change lots at once
8. 8.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
9. 9.True or false: to use the same load is good testing. (a) False (b) True
10. 10.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
11. 11.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) test it only once (d) change only one thing
12. 12.True or false: to use a new load each time is good testing. (a) True (b) False
13. 13.True or false: to measure the same way is poor testing. (a) True (b) False
14. 14.True or false: to guess, do not measure is poor testing. (a) False (b) True
15. 15.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 280 g. What is the mean (average) load it held, in grams?
16. 16.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
17. 17.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) record every result (d) change only one thing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design C (b) design A (c) design B
19. 19.True or false: to repeat each test is poor testing. (a) False (b) True
20. 20.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
22. 22.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
23. 23.🔢 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
24. 24.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design A (b) design C (c) design B
26. 26.🧪 A paper bridge was tested three times. It held 350 g, 350 g and 350 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the weakest? (a) design C (b) design B (c) design A
28. 28.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
29. 29.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
30. 30.🧪 A paper bridge was tested three times. It held 290 g, 280 g and 270 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) guess, do not measure (d) repeat each test
33. 33.True or false: to guess, do not measure is good testing. (a) True (b) False
34. 34.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 150 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) choose and draw one
37. 37.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 190 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to skip writing results is good testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 130 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to test it only once is poor testing. (a) False (b) True

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