Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 379 · 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.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
3. 3.True or false: to repeat each test is good testing. (a) False (b) True
4. 4.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
5. 5.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
6. 6.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
7. 7.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) record every result (d) skip writing results
9. 9.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
12. 12.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
13. 13.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
14. 14.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
15. 15.True or false: to test it only once is poor testing. (a) False (b) True
16. 16.🧪 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
17. 17.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) skip writing results (d) repeat each test
18. 18.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) test it only once
19. 19.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) use the same load (d) skip writing results
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the weakest? (a) design C (b) design A (c) design B
21. 21.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
22. 22.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
23. 23.True or false: to skip writing results is good testing. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) change lots at once (d) change only one thing
25. 25.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
26. 26.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) use a new load each time (d) hide a failed test
27. 27.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) choose and draw one
28. 28.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
29. 29.🧪 A paper bridge was tested three times. It held 300 g, 250 g and 320 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
32. 32.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
33. 33.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change lots at once (d) change only one thing
34. 34.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
35. 35.🧪 A paper bridge was tested three times. It held 200 g, 60 g and 220 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 240 g, 180 g and 300 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
38. 38.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 120 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?

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