Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 777 · 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.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 250 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) change lots at once (d) record every result
3. 3.True or false: to use the same load is good testing. (a) False (b) True
4. 4.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
5. 5.True or false: to test it only once is poor testing. (a) False (b) True
6. 6.True or false: to change lots at once is good testing. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) record every result (d) repeat each test
8. 8.🧪 A paper bridge was tested three times. It held 240 g, 220 g and 230 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to test it only once is good testing. (a) False (b) True
10. 10.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
11. 11.🧪 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
12. 12.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the weakest? (a) design A (b) design C (c) design B
15. 15.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
16. 16.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) hide a failed test (d) use the same load
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) build it with straws
18. 18.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
19. 19.True or false: to use the same load is poor testing. (a) False (b) True
20. 20.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
22. 22.True or false: to measure the same way is good testing. (a) False (b) True
23. 23.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
24. 24.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 150 g. What is the mean (average) load it held, in grams?
26. 26.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) load it with coins
27. 27.True or false: to repeat each test is good testing. (a) True (b) False
28. 28.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
30. 30.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
31. 31.True or false: to record every result is poor testing. (a) True (b) False
32. 32.True or false: to change only one thing is good testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
35. 35.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design B (b) design A (c) design C
37. 37.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
39. 39.True or false: to skip writing results is poor testing. (a) True (b) False
40. 40.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing

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