Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 507 · 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 decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
2. 2.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 210 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) choose and draw one
7. 7.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
9. 9.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) use a new load each time (d) hide a failed test
10. 10.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 400 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to repeat each test is good testing. (a) False (b) True
12. 12.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 400 g. What is the mean (average) load it held, in grams?
13. 13.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) change lots at once
15. 15.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
16. 16.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
18. 18.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 310 g. What is the mean (average) load it held, in grams?
19. 19.🧪 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 strongest? (a) design B (b) design C (c) design A
20. 20.🔢 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
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design A (b) design C (c) design B
22. 22.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) change lots at once (d) repeat each test
23. 23.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) skip writing results (d) hide a failed test
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the strongest? (a) design C (b) design B (c) design A
25. 25.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
26. 26.🧪 A paper bridge was tested three times. It held 360 g, 320 g and 310 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
28. 28.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
29. 29.True or false: to repeat each test is poor testing. (a) False (b) True
30. 30.True or false: to measure the same way is poor testing. (a) True (b) False
31. 31.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
32. 32.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 230 g, 80 g and 170 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to use the same load is good testing. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) guess, do not measure (d) change only one thing
36. 36.True or false: to measure the same way is good testing. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) test it only once (d) guess, do not measure
38. 38.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) use the same load (d) measure the same way
39. 39.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
40. 40.True or false: to test it only once is good testing. (a) True (b) False

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