Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 130 · 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.🧪 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 strongest? (a) design A (b) design C (c) design B
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) use a new load each time (d) skip writing results
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
4. 4.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
5. 5.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 200 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
7. 7.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 390 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
9. 9.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
10. 10.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 380 g, 310 g and 360 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
13. 13.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
15. 15.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) use a new load each time (d) hide a failed test
17. 17.True or false: to repeat each test is poor testing. (a) True (b) False
18. 18.🧪 A paper bridge was tested three times. It held 260 g, 210 g and 280 g. What is the mean (average) load it held, in grams?
19. 19.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
20. 20.True or false: to change only one thing is poor testing. (a) False (b) True
21. 21.True or false: to use the same load is good testing. (a) False (b) True
22. 22.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
24. 24.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
25. 25.True or false: to test it only once is good testing. (a) True (b) False
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design B (b) design C (c) design A
29. 29.🧪 A paper bridge was tested three times. It held 190 g, 160 g and 220 g. What is the mean (average) load it held, in grams?
30. 30.🔢 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
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) change lots at once (d) use the same load
32. 32.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
33. 33.True or false: to repeat each test is good testing. (a) False (b) True
34. 34.True or false: to change lots at once is poor testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
36. 36.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) test it only once (d) measure the same way
37. 37.🔢 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
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design A (b) design C (c) design B
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design A (b) design B (c) design C

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