Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 18 · 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 test it only once? (a) poor testing (b) good testing
2. 2.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 370 g. What is the mean (average) load it held, in grams?
3. 3.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use the same load (d) test it only once
4. 4.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
5. 5.True or false: to change lots at once is good testing. (a) False (b) True
6. 6.🧪 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 weakest? (a) design A (b) design B (c) design C
7. 7.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
9. 9.True or false: to repeat each test is good testing. (a) False (b) True
10. 10.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 320 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design B (b) design C (c) design A
13. 13.True or false: to use the same load is good testing. (a) False (b) True
14. 14.True or false: to skip writing results is good testing. (a) False (b) True
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
16. 16.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
19. 19.True or false: to change only one thing is poor testing. (a) True (b) False
20. 20.🧪 A paper bridge was tested three times. It held 340 g, 310 g and 370 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the weakest? (a) design B (b) design A (c) design C
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) load it with coins
23. 23.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
24. 24.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change only one thing (d) skip writing results
25. 25.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
27. 27.True or false: to change only one thing is good testing. (a) False (b) True
28. 28.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
30. 30.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
31. 31.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) test it only once (d) use the same load
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) record every result (d) measure the same way
33. 33.🧪 A paper bridge was tested three times. It held 300 g, 250 g and 350 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
35. 35.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) hide a failed test
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design C (b) design A (c) design B
38. 38.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) repeat each test (d) guess, do not measure
39. 39.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 360 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?

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