Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 64 · 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.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
2. 2.True or false: to change only one thing is poor testing. (a) False (b) True
3. 3.True or false: to change only one thing is good testing. (a) False (b) True
4. 4.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 350 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) read the challenge rules
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) use a new load each time (d) change only one thing
9. 9.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
10. 10.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
13. 13.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) measure the same way (d) test it only once
14. 14.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
15. 15.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) use a new load each time (d) change lots at once
16. 16.True or false: to hide a failed test is poor testing. (a) True (b) False
17. 17.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
18. 18.True or false: to record every result is good testing. (a) False (b) True
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
20. 20.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
21. 21.True or false: to repeat each test is poor testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) load it with coins (d) sketch three ideas
23. 23.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
24. 24.True or false: to change lots at once is good testing. (a) False (b) True
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design C (b) design B (c) design A
26. 26.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the weakest? (a) design B (b) design C (c) design A
28. 28.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
29. 29.True or false: to record every result is poor testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) use the same load (d) measure the same way
31. 31.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the strongest? (a) design C (b) design A (c) design B
33. 33.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
34. 34.🧪 A paper bridge was tested three times. It held 170 g, 70 g and 210 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
36. 36.True or false: to repeat each test is good testing. (a) True (b) False
37. 37.🧪 A paper bridge was tested three times. It held 290 g, 250 g and 210 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 340 g, 320 g and 330 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?

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