Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 495 · 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 use the same load? (a) good testing (b) poor testing
2. 2.True or false: to test it only once is poor testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
4. 4.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
5. 5.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change lots at once (d) skip writing results
7. 7.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 170 g. What is the mean (average) load it held, in grams?
8. 8.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 180 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to hide a failed test is poor testing. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) repeat each test (d) guess, do not measure
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design A (b) design B (c) design C
13. 13.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) guess, do not measure (d) skip writing results
14. 14.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
15. 15.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) skip writing results (d) change only one thing
16. 16.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
17. 17.True or false: to use a new load each time is good testing. (a) True (b) False
18. 18.True or false: to use the same load is poor testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) sketch three ideas
20. 20.True or false: to measure the same way is good testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
22. 22.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
23. 23.True or false: to change only one thing is poor testing. (a) False (b) True
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 310 g, design B held 260 g and design C held 360 g. Which design was the weakest? (a) design C (b) design A (c) design B
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) record every result (d) repeat each test
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design C (b) design B (c) design A
28. 28.🧪 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 B (b) design C (c) design A
29. 29.True or false: to change lots at once is poor testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
31. 31.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
32. 32.True or false: to measure the same way is poor testing. (a) False (b) True
33. 33.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
35. 35.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
36. 36.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
38. 38.🧪 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 C (b) design B (c) design A
39. 39.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
40. 40.True or false: to skip writing results is poor testing. (a) True (b) False

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