Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 282 · 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.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
2. 2.True or false: to hide a failed test is good testing. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) skip writing results (d) measure the same way
4. 4.True or false: to measure the same way is good testing. (a) False (b) True
5. 5.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
6. 6.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) hide a failed test (d) use the same load
9. 9.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
10. 10.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) guess, do not measure (d) change only one thing
12. 12.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 230 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
14. 14.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
15. 15.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
16. 16.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
17. 17.True or false: to use the same load is poor testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design B (b) design C (c) design A
20. 20.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) change only one thing (d) measure the same way
21. 21.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
22. 22.True or false: to guess, do not measure is poor testing. (a) False (b) True
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) choose and draw one
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) strengthen the weak part
26. 26.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) build it with straws (c) choose and draw one (d) read the challenge rules
29. 29.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change only one thing (d) guess, do not measure
30. 30.True or false: to change lots at once is good testing. (a) True (b) False
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
34. 34.True or false: to guess, do not measure is good testing. (a) True (b) False
35. 35.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design A (b) design B (c) design C
37. 37.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 340 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to use the same load is good testing. (a) True (b) False
39. 39.True or false: to repeat each test is poor testing. (a) True (b) False
40. 40.🧪 A paper bridge was tested three times. It held 250 g, 210 g and 170 g. What is the mean (average) load it held, in grams?

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