Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 894 · 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 test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
2. 2.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
3. 3.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
4. 4.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
5. 5.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) record every result (d) guess, do not measure
7. 7.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) build it with straws
8. 8.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) load it with coins (c) choose and draw one (d) strengthen the weak part
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) load it with coins
10. 10.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) skip writing results (d) test it only once
11. 11.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) measure the same way (d) use a new load each time
12. 12.🧪 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 weakest? (a) design A (b) design C (c) design B
13. 13.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
14. 14.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
15. 15.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 130 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to use a new load each time is poor testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 410 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 330 g, 160 g and 200 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 400 g, 330 g and 320 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to skip writing results is good testing. (a) True (b) False
22. 22.True or false: to change only one thing is poor testing. (a) True (b) False
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
24. 24.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) skip writing results
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) repeat each test (d) measure the same way
26. 26.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
27. 27.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
28. 28.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
30. 30.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
31. 31.True or false: to repeat each test is good testing. (a) True (b) False
32. 32.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
33. 33.True or false: to test it only once is good testing. (a) False (b) True
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
36. 36.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
37. 37.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B
39. 39.🧪 A paper bridge was tested three times. It held 350 g, 220 g and 210 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy

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